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Naina DasEduRev Civil Engineering (CE) |
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Naina Das
EduRev Civil Engineering (CE)
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Currently preparing for
 | Civil Engineering (CE) |
 | Mechanical Engineering |
Top Scoring Tests by Naina
Test: Internal Forces Developed In Structural Members | 80/120 |
Test: Composite Bodies | 36/56 |
Test: Addition Of A System Of Coplanar Forces | 36/56 |
Test: Product Of Inertia For An Area | 39/64 |
Test: Characteristics Of Dry Friction - 1 | 60/100 |
Test: Fluid Pressure | 35/60 |
Test: Resultant Of A General Distributed Loading | 35/60 |
Test: Frame And Machines | 35/60 |
Test: Potential Energy | 35/60 |
Test: Cables | 35/60 |
Discussed Questions
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Naina Das asked • yesterday |
Rohan starts walking in north-east direction and travels 30 meter. Now he moves towards east and walks 20 meter. Now he turns towards south west and moves 30 meter and finally walks towards west for 5 meter and stopped. Find the distance of rohan from the starting point.- a)10m
- b)15m
- c)20m
- d)25m
- e)None of these
Correct answer is option 'B'. Can you explain this answer?
Rohan starts walking in north-east direction and travels 30 meter. Now he moves towards east and walks 20 meter. Now he turns towards south west and moves 30 meter and finally walks towards west for 5 meter and stopped. Find the distance of rohan from the starting point.
a)
10m
b)
15m
c)
20m
d)
25m
e)
None of these
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Learnpro Institute answered |
To determine the distance from the starting point:
- Initially, moving north and south cancels out, leaving Rohan 0 metres north or south.
- In the east-west direction, he ends up with:
- 21.2 metres east (first move)
- + 20 metres east (second move)
- - 21.2 metres west (third move)
- - 5 metres west (fourth move)
Therefore, the distance of Rohan from the starting point is 15 metres.
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Naina Das asked • 2 days ago |
निर्देश: निम्नलिखित श्रृंखला में प्रश्न चिह्न (?) के स्थान पर क्या आएगा?18 32 50 72 98 ?- a)127
- b)128
- c)130
- d)135
Correct answer is option 'B'. Can you explain this answer?
निर्देश: निम्नलिखित श्रृंखला में प्रश्न चिह्न (?) के स्थान पर क्या आएगा?
18 32 50 72 98 ?
a)
127
b)
128
c)
130
d)
135
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Learnpro Institute answered |
इसलिए, विकल्प B सही है।
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Naina Das asked • 5 days ago |
A 1 किमी को 3 मिनट 10 सेकंड में दौड़ सकता है। और B उसी दूरी को 3 मिनट 20 सेकंड में पूरा कर सकता है। A, B को कितनी दूरी से हरा सकता है?- a)80 मीटर
- b)70 मीटर
- c)60 मीटर
- d)50 मीटर
Correct answer is option 'D'. Can you explain this answer?
A 1 किमी को 3 मिनट 10 सेकंड में दौड़ सकता है। और B उसी दूरी को 3 मिनट 20 सेकंड में पूरा कर सकता है। A, B को कितनी दूरी से हरा सकता है?
a)
80 मीटर
b)
70 मीटर
c)
60 मीटर
d)
50 मीटर
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Wizius Careers answered |
स्पष्ट है कि A, B को 10 सेकंड से हरा देता है।
B द्वारा 10 सेकंड में तय की गई दूरी = (1000/200*10) मीटर = 50 मीटर
अतः A, B को 50 मीटर से हरा देता है।
B द्वारा 10 सेकंड में तय की गई दूरी = (1000/200*10) मीटर = 50 मीटर
अतः A, B को 50 मीटर से हरा देता है।
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Naina Das asked • 1 week ago |
निर्देश: नीचे दिए गए प्रश्नों में एक प्रश्न और उसके नीचे दिए गए दो बयानों I और II की संख्या है। आपको यह निर्णय लेना है कि क्या बयानों में प्रदान किए गए डेटा प्रश्न का उत्तर देने के लिए पर्याप्त हैं। दोनों बयानों को पढ़ें और उत्तर दें:यदि 'a' और 'b' दो अभाज्य संख्या हैं, तो a और b के मानों के बीच का अंतर क्या है?बयान I : a + b = 30
बयान II : a < 20="" और="" b=""><>- a)यदि केवल कथन I में दिया गया डेटा प्रश्न का उत्तर देने के लिए पर्याप्त है जबकि कथन II में दिया गया डेटा प्रश्न का उत्तर देने के लिए पर्याप्त नहीं है।
- b)यदि केवल कथन II में दिए गए डेटा से प्रश्न का उत्तर देना संभव है, जबकि केवल कथन I में दिए गए डेटा से प्रश्न का उत्तर देना संभव नहीं है।
- c)यदि डेटा केवल कथन I या केवल कथन II में प्रश्न का उत्तर देने के लिए पर्याप्त है।
- d)यदि I और II में दिए गए डेटा एक साथ मिलकर प्रश्न का उत्तर देने के लिए पर्याप्त नहीं हैं।
Correct answer is option 'D'. Can you explain this answer?
निर्देश: नीचे दिए गए प्रश्नों में एक प्रश्न और उसके नीचे दिए गए दो बयानों I और II की संख्या है। आपको यह निर्णय लेना है कि क्या बयानों में प्रदान किए गए डेटा प्रश्न का उत्तर देने के लिए पर्याप्त हैं। दोनों बयानों को पढ़ें और उत्तर दें:
यदि 'a' और 'b' दो अभाज्य संख्या हैं, तो a और b के मानों के बीच का अंतर क्या है?
बयान I : a + b = 30
बयान II : a < 20="" और="" b=""><>
बयान II : a < 20="" और="" b=""><>
a)
यदि केवल कथन I में दिया गया डेटा प्रश्न का उत्तर देने के लिए पर्याप्त है जबकि कथन II में दिया गया डेटा प्रश्न का उत्तर देने के लिए पर्याप्त नहीं है।
b)
यदि केवल कथन II में दिए गए डेटा से प्रश्न का उत्तर देना संभव है, जबकि केवल कथन I में दिए गए डेटा से प्रश्न का उत्तर देना संभव नहीं है।
c)
यदि डेटा केवल कथन I या केवल कथन II में प्रश्न का उत्तर देने के लिए पर्याप्त है।
d)
यदि I और II में दिए गए डेटा एक साथ मिलकर प्रश्न का उत्तर देने के लिए पर्याप्त नहीं हैं।
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Target Study Academy answered |
बयान I: a + b = 30
इसके 3 संभावनाएँ हैं
a, b = (11, 19), (13, 17) या (7, 23)
इसलिए, केवल बयान I पर्याप्त नहीं है।
इसके 3 संभावनाएँ हैं
a, b = (11, 19), (13, 17) या (7, 23)
इसलिए, केवल बयान I पर्याप्त नहीं है।
बयान II: a < 20="" और="" b=""><>
इसलिए, केवल बयान II पर्याप्त नहीं है।
इसलिए, केवल बयान II पर्याप्त नहीं है।
दोनों बयानों का उपयोग करते हुए:
a, b = (11, 19), (13, 17) या (7, 23)
a < 20="" और="" b=""><>
फिर भी, हम केवल एक विकल्प (7, 23) को समाप्त कर सकते हैं
इसलिए, दोनों बयान मिलकर भी अपर्याप्त हैं।
इसलिए, विकल्प D सही है।
a, b = (11, 19), (13, 17) या (7, 23)
a < 20="" और="" b=""><>
फिर भी, हम केवल एक विकल्प (7, 23) को समाप्त कर सकते हैं
इसलिए, दोनों बयान मिलकर भी अपर्याप्त हैं।
इसलिए, विकल्प D सही है।
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Naina Das asked • 2 weeks ago |
निर्देश: निम्नलिखित प्रश्न का ध्यानपूर्वक अध्ययन करें और सही उत्तर चुनें:एक Δ ABC में, यदि D और E क्रमशः AB और AC की भुजाओं पर ऐसे बिंदु हैं कि DE || BC और यदि AD = x , DB = x – 2 , AE = x + 2 और EC = x – 1 है। तो x का मान ज्ञात करें।- a)5
- b)4
- c)3
- d)2
Correct answer is option 'B'. Can you explain this answer?
निर्देश: निम्नलिखित प्रश्न का ध्यानपूर्वक अध्ययन करें और सही उत्तर चुनें:
एक Δ ABC में, यदि D और E क्रमशः AB और AC की भुजाओं पर ऐसे बिंदु हैं कि DE || BC और यदि AD = x , DB = x – 2 , AE = x + 2 और EC = x – 1 है। तो x का मान ज्ञात करें।
a)
5
b)
4
c)
3
d)
2
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Target Study Academy answered |
चूँकि, DE || BC
⇒ x (x – 1) = (x + 2)(x – 2)
⇒ x2 – x = x2 – 4
⇒ x = 4
इसलिए, विकल्प B सही है।
⇒ x2 – x = x2 – 4
⇒ x = 4
इसलिए, विकल्प B सही है।
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Naina Das asked • 2 weeks ago |
The two elements that are frequently used for making transistors are ___ and ___.- a)Boron and Aluminium
- b)Silicon and Germanium
- c) Iridium and Tungsten
- d)Niobium and Columbium
Correct answer is option 'B'. Can you explain this answer?
The two elements that are frequently used for making transistors are ___ and ___.
a)
Boron and Aluminium
b)
Silicon and Germanium
c)
Iridium and Tungsten
d)
Niobium and Columbium
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EduRev GATE answered |
Silicon and Germanium : Transistors are made of semiconductor chemical elements, usually Silicon, which belongs to in Group IV in the periodic table of elements. Germanium, another group-IV element, is used together with silicon in specialized transistors.
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Naina Das upvoted • 2 weeks ago |
If a simply supported beam AB of span is subjected to an external moment M at distance a from end A, the reactions RA and RB are- a)
- b)
- c)
- d)
Correct answer is option 'D'. Can you explain this answer?
If a simply supported beam AB of span is subjected to an external moment M at distance a from end A, the reactions RA and RB are
a)
b)
c)
d)
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Constructing Careers answered |
Correct Answer :- d
Explanation : Sum of moment at point A=0
therefore Mo= Rb*l
Rb= Mo/l
similarly sum of moment at point B =0
Ra= Mo/l
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Naina Das asked • 2 weeks ago |
निर्देश: निम्नलिखित जानकारी का अध्ययन करें और दिए गए प्रश्नों का ध्यानपूर्वक उत्तर दें।इशु एक पार्क में खड़ी थी। उसने पूर्व की दिशा में 6 मीटर चलकर दाएं मुड़कर 3 मीटर चली। फिर उसने बाएं मुड़कर 6 मीटर चलकर मॉल पहुंची। अब, उसने दाएं मुड़कर 4 मीटर चला और फिर से दाएं मुड़कर 3 मीटर चलकर जिम पहुंची। कुछ समय बाद, उसने बाएं मुड़कर 3 मीटर चला और दाएं मुड़कर 9 मीटर चलकर अपने स्कूल पहुंची।प्रश्न: मॉल और जिम के बीच की सबसे छोटी दूरी क्या है?- a)3 मीटर
- b)4 मीटर
- c)5 मीटर
- d)6 मीटर
Correct answer is option 'C'. Can you explain this answer?
निर्देश: निम्नलिखित जानकारी का अध्ययन करें और दिए गए प्रश्नों का ध्यानपूर्वक उत्तर दें।
इशु एक पार्क में खड़ी थी। उसने पूर्व की दिशा में 6 मीटर चलकर दाएं मुड़कर 3 मीटर चली। फिर उसने बाएं मुड़कर 6 मीटर चलकर मॉल पहुंची। अब, उसने दाएं मुड़कर 4 मीटर चला और फिर से दाएं मुड़कर 3 मीटर चलकर जिम पहुंची। कुछ समय बाद, उसने बाएं मुड़कर 3 मीटर चला और दाएं मुड़कर 9 मीटर चलकर अपने स्कूल पहुंची।
प्रश्न: मॉल और जिम के बीच की सबसे छोटी दूरी क्या है?
a)
3 मीटर
b)
4 मीटर
c)
5 मीटर
d)
6 मीटर
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Aim It Academy answered |
मान लीजिए कि मॉल और जिम के बीच की दूरी x मीटर है।
सामान्य व्याख्या से:
पाइथागोरस के प्रमेय का उपयोग करते हुए, हमें मिलता है:
x2 = 42 + 32
x2 = 16 + 9 = 25
x = 5 मीटर
इसलिए, विकल्प C सही है।
सामान्य व्याख्या:
संदर्भ:
इशु एक पार्क में खड़ी थी।
उसने पूर्व की दिशा में 6 मीटर चलकर दाएं मुड़कर 3 मीटर चली।
फिर उसने बाएं मुड़कर 6 मीटर चलकर मॉल पहुंची।
अब, उसने दाएं मुड़कर 4 मीटर चला और फिर से दाएं मुड़कर 3 मीटर चलकर जिम पहुंची।
कुछ समय बाद, उसने बाएं मुड़कर 3 मीटर चला और दाएं मुड़कर 9 मीटर चलकर अपने स्कूल पहुंची।
निष्कर्ष:
उपरोक्त कथन से, हमें अंतिम चित्र प्राप्त होता है:
सामान्य व्याख्या से:
पाइथागोरस के प्रमेय का उपयोग करते हुए, हमें मिलता है:
x2 = 42 + 32
x2 = 16 + 9 = 25
x = 5 मीटर
इसलिए, विकल्प C सही है।
सामान्य व्याख्या:
संदर्भ:
इशु एक पार्क में खड़ी थी।
उसने पूर्व की दिशा में 6 मीटर चलकर दाएं मुड़कर 3 मीटर चली।
फिर उसने बाएं मुड़कर 6 मीटर चलकर मॉल पहुंची।
अब, उसने दाएं मुड़कर 4 मीटर चला और फिर से दाएं मुड़कर 3 मीटर चलकर जिम पहुंची।
कुछ समय बाद, उसने बाएं मुड़कर 3 मीटर चला और दाएं मुड़कर 9 मीटर चलकर अपने स्कूल पहुंची।
निष्कर्ष:
उपरोक्त कथन से, हमें अंतिम चित्र प्राप्त होता है:
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Naina Das asked • 3 weeks ago |
निर्देश: नीचे दी गई जानकारी को देखें और निम्नलिखित प्रश्नों का उत्तर दें: नई दिल्ली के एक स्कूल में, स्कूल के हेड बॉय का चुनाव करने के लिए तीन वरिष्ठ शिक्षकों का एक पैनल बनाया गया है। छात्रों द्वारा तीन संभावित उम्मीदवारों का चयन किया गया है: अजय, वीर और नितिन। प्रत्येक शिक्षक को प्रत्येक छात्र के लिए या तो मतदान करना है या उनके खिलाफ। चयन के बारे में हमें निम्नलिखित मानदंड ज्ञात हैं: - बिल्कुल दो शिक्षक अजय के लिए मतदान करते हैं
- बिल्कुल एक शिक्षक वीर के लिए मतदान करता है
- बिल्कुल एक शिक्षक नितिन के लिए मतदान करता है
- शिक्षक 1 अजय के लिए मतदान करता है
- शिक्षक 2 अजय और नितिन के खिलाफ मतदान करता है
- शिक्षक 3 नितिन के खिलाफ मतदान करता है
प्रश्न: दी गई जानकारी के आधार पर, निम्नलिखित में से कौन सा कथन पूरी तरह से गलत है?- a)यदि शिक्षक 3 वीर के खिलाफ मतदान करते हैं, तो शिक्षक 2 ने वीर के लिए मतदान किया होगा।
- b)शिक्षक 1 वीर को स्कूल का हेड बॉय बनाने के खिलाफ थे
- c)शिक्षक 3 ने अजय के लिए वोट दिया
- d)उपरोक्त में से कोई नहीं
Correct answer is option 'D'. Can you explain this answer?
निर्देश: नीचे दी गई जानकारी को देखें और निम्नलिखित प्रश्नों का उत्तर दें: नई दिल्ली के एक स्कूल में, स्कूल के हेड बॉय का चुनाव करने के लिए तीन वरिष्ठ शिक्षकों का एक पैनल बनाया गया है। छात्रों द्वारा तीन संभावित उम्मीदवारों का चयन किया गया है: अजय, वीर और नितिन। प्रत्येक शिक्षक को प्रत्येक छात्र के लिए या तो मतदान करना है या उनके खिलाफ। चयन के बारे में हमें निम्नलिखित मानदंड ज्ञात हैं:
- बिल्कुल दो शिक्षक अजय के लिए मतदान करते हैं
- बिल्कुल एक शिक्षक वीर के लिए मतदान करता है
- बिल्कुल एक शिक्षक नितिन के लिए मतदान करता है
- शिक्षक 1 अजय के लिए मतदान करता है
- शिक्षक 2 अजय और नितिन के खिलाफ मतदान करता है
- शिक्षक 3 नितिन के खिलाफ मतदान करता है
प्रश्न: दी गई जानकारी के आधार पर, निम्नलिखित में से कौन सा कथन पूरी तरह से गलत है?
a)
यदि शिक्षक 3 वीर के खिलाफ मतदान करते हैं, तो शिक्षक 2 ने वीर के लिए मतदान किया होगा।
b)
शिक्षक 1 वीर को स्कूल का हेड बॉय बनाने के खिलाफ थे
c)
शिक्षक 3 ने अजय के लिए वोट दिया
d)
उपरोक्त में से कोई नहीं
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Learnpro Institute answered |
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Naina Das asked • 3 weeks ago |
5793405 x 99999 का मूल्यांकन करें?- a)579334706505
- b)570334706595
- c)579334346595
- d)579334706595
Correct answer is option 'D'. Can you explain this answer?
5793405 x 99999 का मूल्यांकन करें?
a)
579334706505
b)
570334706595
c)
579334346595
d)
579334706595
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Aspire Academy answered |
दी गई जानकारी:
5793405 x 99999
99999 = (100000 - 1)
तो,
5793405 x (100000 - 1)
579340500000 - 5793405 = 579334706595
इसलिए, 579334706595 दी गई गुणनफल का परिणाम होगा।
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Naina Das asked • 3 weeks ago |
Consider the following statements regarding the Large Phased Array Radar (LPAR) deployed by China:1. The LPAR in Yunnan province can monitor areas over 5,000 kilometers, including parts of Indian territory.2. Only China and Russia possess LPAR technology, with the United States lacking this capability.3. The LPAR is a critical component of early warning systems, capable of detecting and tracking ballistic missile launches in real time.- a)1 Only
- b)1 and 2 Only
- c)1 and 3 Only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
Consider the following statements regarding the Large Phased Array Radar (LPAR) deployed by China:
1. The LPAR in Yunnan province can monitor areas over 5,000 kilometers, including parts of Indian territory.
2. Only China and Russia possess LPAR technology, with the United States lacking this capability.
3. The LPAR is a critical component of early warning systems, capable of detecting and tracking ballistic missile launches in real time.
a)
1 Only
b)
1 and 2 Only
c)
1 and 3 Only
d)
1, 2 and 3
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Future Foundation Institute answered |
- Statement 1: This statement is correct. The Large Phased Array Radar (LPAR) deployed by China in Yunnan province is indeed capable of monitoring areas over 5,000 kilometers. This extensive range allows it to cover parts of Indian territory, making it strategically significant for regional security dynamics.
- Statement 2: This statement is incorrect. Besides China and Russia, the United States also possesses LPAR technology. Examples include the U.S. PAVE PAWS radar, which is a well-known system with similar capabilities.
- Statement 3: This statement is correct. The LPAR plays a vital role in early warning systems and air defense networks. Its ability to detect and track ballistic missile launches in real time significantly enhances a nation's military capabilities by allowing for timely responses to potential threats.
Thus, the correct statements are 1 and 3, making Option C: 1 and 3 Only the correct answer.
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Naina Das upvoted • 4 weeks ago |
For sleeper density (n + 5), number of sleepers required for constructing a broad gauge (BG) track of length 768 m.- a)900
- b)1080
- c)1020
- d)1250
Correct answer is option 'B'. Can you explain this answer?
a)
900
b)
1080
c)
1020
d)
1250
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Parth Patel answered |
Length of rail on BG track = 12.8
Sleeper density = 12.8 + 5 = 18 per rail
No. of rails =
=60 rails
No. of Sleepers=
= 1080
Sleeper density = 12.8 + 5 = 18 per rail
No. of rails =
=60 railsNo. of Sleepers=
= 1080|
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Naina Das upvoted • Feb 17, 2025 |
{(x,y)|x+y = 5} is a- a)not a function
- b)a composite function
- c)one-one mapping
- d)none of these
Correct answer is option 'C'. Can you explain this answer?
{(x,y)|x+y = 5} is a
a)
not a function
b)
a composite function
c)
one-one mapping
d)
none of these
|
Freedom Institute answered |
To determine the nature of the set (x, y)| xy = 5, consider the following:
- The set represents a hyperbola, where any x has a unique corresponding y = {5/x}.
- Each pair (x, y) satisfies the relation xy = 5, implying a one-to-one correspondence between x and y.
- This mapping is both injective and bijective, as each x maps to exactly one y and vice versa
Thus, the correct answer is Option C: one-one mapping.
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Naina Das upvoted • Feb 09, 2025 |
A bracket, as shown in figure, is welded to a plate. The welds are of same sizeThe value of permissible force per mm of the weld length is
- a) 1 kN
- b) 1.5 kN
- c) 3 kN
- d) 1.2 kN
Correct answer is option 'D'. Can you explain this answer?
A bracket, as shown in figure, is welded to a plate. The welds are of same size
The value of permissible force per mm of the weld length is
a)
1 kN
b)
1.5 kN
c)
3 kN
d)
1.2 kN
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Gate Funda answered |
Let permissible force per mm be Pper
From moment equality of shear force at weld
Pper x 50 x 60 = Pper x l2 x 40
l2 = 75 mm
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Naina Das upvoted • Jan 30, 2025 |
The total number of independent equations that form the Lacey's regime theory is
- a)6
- b)10
- c)3
- d)4
Correct answer is option 'C'. Can you explain this answer?
The total number of independent equations that form the Lacey's regime theory is
a)
6
b)
10
c)
3
d)
4
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Manasa Bose answered |
Lacey collected a large number of data of stable channels in Indo-Ganetic plains. Analyzing the data he gave the following equations of regime channel relating regime velocity Vc, silt factor f, hydraulic radius R, area A, sediment size in mm and bed slope S,
These four equations are the Lacey’s basic regime flow equations.
These four equations are the Lacey’s basic regime flow equations.
The observed value of N in static cone penetration test is corrected by _________- a)Overburden and Dilatancy /submergence
- b)Effective pressure
- c)None of the mentioned
- d)All of the mentioned
Correct answer is option 'A'. Can you explain this answer?
The observed value of N in static cone penetration test is corrected by _________
a)
Overburden and Dilatancy /submergence
b)
Effective pressure
c)
None of the mentioned
d)
All of the mentioned
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Naina Das answered • Jan 29, 2025 |
Understanding N Value in Static Cone Penetration Test
The static cone penetration test (CPT) is widely used in geotechnical engineering to assess soil properties. The observed value of N, which represents the cone resistance, often needs correction to reflect more accurate soil behavior under various conditions.
Corrections for Overburden Pressure
- The overburden pres... more
The static cone penetration test (CPT) is widely used in geotechnical engineering to assess soil properties. The observed value of N, which represents the cone resistance, often needs correction to reflect more accurate soil behavior under various conditions.
Corrections for Overburden Pressure
- The overburden pres... more
Consider the following statements and Identify the correct option with regard to provisions of IS 456: 2000:P. The minimum stripping time for props to slab spanning over 4.5 m is 7 daysQ. The minimum stripping time for props to arches spanning over 6 m is 14 days.R. To ensure strength of Designed concrete mix, Random sampling procedure is adoptedS. When bar of two different diameter are to be spliced, the lap length shall be calculated on the basis of bar of the larger diameter.- a)P – True Q – True R – True S – False
- b)P – False Q – False R – True S – True
- c)P – False Q – True R – True S – True
- d)P – False Q – False R – True S – False
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements and Identify the correct option with regard to provisions of IS 456: 2000:
P. The minimum stripping time for props to slab spanning over 4.5 m is 7 days
Q. The minimum stripping time for props to arches spanning over 6 m is 14 days.
R. To ensure strength of Designed concrete mix, Random sampling procedure is adopted
S. When bar of two different diameter are to be spliced, the lap length shall be calculated on the basis of bar of the larger diameter.
a)
P – True Q – True R – True S – False
b)
P – False Q – False R – True S – True
c)
P – False Q – True R – True S – True
d)
P – False Q – False R – True S – False
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Naina Das answered • Jan 29, 2025 |
Understanding IS 456: 2000 Provisions
The IS 456: 2000 is a crucial standard in civil engineering that outlines various guidelines for the design and construction of concrete structures. Let's analyze the statements provided:
P. Minimum stripping time for props to slab spanning over 4.5 m is 7 days
- False: The minimum stripping time for props supporting slabs w... more
The IS 456: 2000 is a crucial standard in civil engineering that outlines various guidelines for the design and construction of concrete structures. Let's analyze the statements provided:
P. Minimum stripping time for props to slab spanning over 4.5 m is 7 days
- False: The minimum stripping time for props supporting slabs w... more
Following results were obtained from the classification test of a soil –
Percentage passing 75 µ sieve = 40%,
Liquid limit = 35%, Plastic limit = 15%
Calculate the group index of the soil.?
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Naina Das answered • Dec 26, 2024 |
Introduction
To determine the group index of soil, we utilize the classification parameters provided: percentage passing the 75 µm sieve, liquid limit, and plastic limit. The group index is a numerical value that reflects the plasticity and gradation of the soil.
Given Data
Calculating Plasticity Index (PI)
The plasticity index is calculated as follows:
Group Index Formula
The group index (GI) can be calculated using the following formula:
Where F is the percentage passing the 75 µm sieve.
Substituting Values
Now, substituting the values into the group index formula:
Final Group Index
The group index of the soil is approximately 8.98. This value indicates the soil's suitability for construction purposes, where a higher group index generally suggests poorer quality soil.
Conclusion
Understanding the group index assists in evaluating soil behavior and its engineering properties, which is crucial for civil engineering applications.
To determine the group index of soil, we utilize the classification parameters provided: percentage passing the 75 µm sieve, liquid limit, and plastic limit. The group index is a numerical value that reflects the plasticity and gradation of the soil.
Given Data
- Percentage passing 75 µm sieve (P) = 40%
- Liquid limit (LL) = 35%
- Plastic... more
Calculating Plasticity Index (PI)
The plasticity index is calculated as follows:
- PI = LL - PL = 35% - 15% = 20%
Group Index Formula
The group index (GI) can be calculated using the following formula:
- GI = (F - 35) + (0.2 * PI) + (0.005 * (LL - 40))
Where F is the percentage passing the 75 µm sieve.
Substituting Values
Now, substituting the values into the group index formula:
- F = 40
- GI = (40 - 35) + (0.2 * 20) + (0.005 * (35 - 40))
- GI = 5 + 4 - 0.025 = 8.975
Final Group Index
The group index of the soil is approximately 8.98. This value indicates the soil's suitability for construction purposes, where a higher group index generally suggests poorer quality soil.
Conclusion
Understanding the group index assists in evaluating soil behavior and its engineering properties, which is crucial for civil engineering applications.
Let x(t) be a periodic signal with time period T, Let y(t) = x(t – to) + x(t + to) for some to. The fourier series coefficients of y(t) are denoted by bk. If bk = 0 for all odd K. Then to can be equal to- a)T/8
- b)T/4
- c)T/2
- d)2T
Correct answer is option 'B'. Can you explain this answer?
Let x(t) be a periodic signal with time period T, Let y(t) = x(t – to) + x(t + to) for some to. The fourier series coefficients of y(t) are denoted by bk. If bk = 0 for all odd K. Then to can be equal to
a)
T/8
b)
T/4
c)
T/2
d)
2T
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Naina Das answered • Nov 06, 2024 |
Understanding the Problem
The signal y(t) is defined as y(t) = x(t - to) + x(t + to). The Fourier series coefficients of y(t) are denoted by bk, and it is given that bk = 0 for all odd k. This means that y(t) only contains even harmonics.
Significance of bk = 0 for Odd k
- A signal with only even harmonics is symmetric with respect to time.
- This symmetry indicat... more
The signal y(t) is defined as y(t) = x(t - to) + x(t + to). The Fourier series coefficients of y(t) are denoted by bk, and it is given that bk = 0 for all odd k. This means that y(t) only contains even harmonics.
Significance of bk = 0 for Odd k
- A signal with only even harmonics is symmetric with respect to time.
- This symmetry indicat... more
What is the total float of an activity for which
Earliest Start time ES = 5
Earliest Finish time EF = 15
Latest Start time LS = 35
Latest Finish time LF = 45- a)10
- b)20
- c)30
- d)40
Correct answer is option 'C'. Can you explain this answer?
What is the total float of an activity for which
Earliest Start time ES = 5
Earliest Finish time EF = 15
Latest Start time LS = 35
Latest Finish time LF = 45
Earliest Start time ES = 5
Earliest Finish time EF = 15
Latest Start time LS = 35
Latest Finish time LF = 45
a)
10
b)
20
c)
30
d)
40
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Naina Das answered • Aug 14, 2024 |
Calculation of Total Float:
1. Total Float Formula:
Total Float = LS - ES or LF - EF
2. Given Data:
ES = 5
EF = 15
LS = 35
LF = 45
3. Calculation:
Total Float = LS - ES
Total Float = 35 - 5
Total Float = 30
Therefore, the total float of the activity is 30. Hence, the correct answer is option '... more
1. Total Float Formula:
Total Float = LS - ES or LF - EF
2. Given Data:
ES = 5
EF = 15
LS = 35
LF = 45
3. Calculation:
Total Float = LS - ES
Total Float = 35 - 5
Total Float = 30
Therefore, the total float of the activity is 30. Hence, the correct answer is option '... more
Given two complex numbers Z1 = 5 + (5√3)i, and Z2 = 2/√3 + 2i the argument of Z1/Z2 in degrees is- a)0
- b)30
- c)60
- d)90
Correct answer is option 'A'. Can you explain this answer?
Given two complex numbers Z1 = 5 + (5√3)i, and Z2 = 2/√3 + 2i the argument of Z1/Z2 in degrees is
a)
0
b)
30
c)
60
d)
90
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Naina Das answered • Aug 14, 2024 |
Given Complex Numbers:
Z1 = 5 + (5√3)i
Z2 = 2/√3 + 2i
Calculating Z1/Z2:
To find the argument of Z1/Z2, we first need to calculate the quotient Z1/Z2.
Z1/Z2 = (5 + (5√3)i) / (2/√3 + 2i)
= [(5 + (5√3)i) * (√3 - i)] / [(2/√3 + 2i) * (√3 - i)]
= [(5√3 + 5i) - 5√3 - 5] / (2 + 2√3i + 2√3 - 2i)
= (5i - 5) / (2 + 2√3i + 2√3 - 2i)
= (5i - 5)... more
Z1 = 5 + (5√3)i
Z2 = 2/√3 + 2i
Calculating Z1/Z2:
To find the argument of Z1/Z2, we first need to calculate the quotient Z1/Z2.
Z1/Z2 = (5 + (5√3)i) / (2/√3 + 2i)
= [(5 + (5√3)i) * (√3 - i)] / [(2/√3 + 2i) * (√3 - i)]
= [(5√3 + 5i) - 5√3 - 5] / (2 + 2√3i + 2√3 - 2i)
= (5i - 5) / (2 + 2√3i + 2√3 - 2i)
= (5i - 5)... more
In the window air conditioner, the expansion device used is[2004]- a)capillary tube
- b)thermostatic expansion valve
- c)automatic expansion valve
- d)float valve
Correct answer is option 'A'. Can you explain this answer?
In the window air conditioner, the expansion device used is
[2004]
a)
capillary tube
b)
thermostatic expansion valve
c)
automatic expansion valve
d)
float valve
|
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Naina Das answered • Feb 24, 2024 |
Capillary Tube in Window Air Conditioner
Introduction
In a window air conditioner, the expansion device used is a capillary tube. This component plays a crucial role in the refrigeration cycle of the air conditioner.
Function
- The capillary tube acts as a restriction in the refrigeration system, allowing the high-pressure liquid refrigerant to ... more
Introduction
In a window air conditioner, the expansion device used is a capillary tube. This component plays a crucial role in the refrigeration cycle of the air conditioner.
Function
- The capillary tube acts as a restriction in the refrigeration system, allowing the high-pressure liquid refrigerant to ... more
A single clutch operating under dry sliding condition transmits 150 Nm. The average coefficient of friction is 0.3 and maximum operating pressure is 0.5 MPa. The ratio between the outside radius and inner radius is 1.73. Under uniform wear conditions, if the outside radius of the clutch is to be minimum, the inside radius will have to be- a)64.4 mm
- b)84.6 mm
- c)54.3 mm
- d)74.5 mm
Correct answer is option 'C'. Can you explain this answer?
A single clutch operating under dry sliding condition transmits 150 Nm. The average coefficient of friction is 0.3 and maximum operating pressure is 0.5 MPa. The ratio between the outside radius and inner radius is 1.73. Under uniform wear conditions, if the outside radius of the clutch is to be minimum, the inside radius will have to be
a)
64.4 mm
b)
84.6 mm
c)
54.3 mm
d)
74.5 mm
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Naina Das answered • Feb 24, 2024 |
- **Given Data**
- Clutch torque: 150 Nm
- Coefficient of friction: 0.3
- Maximum operating pressure: 0.5 MPa
- Ratio of outside radius to inside radius: 1.73
- **Formula**
- $T = \frac{p \times \mu \times R_{\text{mean}}^2}{2}$
- $R_{\text{mean}} = \sqrt{\frac{2T}{p \times \mu}}$
- **Calculations**
- $R_{\t... more
In down milling, the thickness of chip is- a)minimum at the beginning of the cut and maximum at the end of the cut
- b)maximum of the beginning of the cut and minimum at the end of the cut
- c)uniform throughout the cut
- d)none of these
Correct answer is option 'B'. Can you explain this answer?
In down milling, the thickness of chip is
a)
minimum at the beginning of the cut and maximum at the end of the cut
b)
maximum of the beginning of the cut and minimum at the end of the cut
c)
uniform throughout the cut
d)
none of these
|
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Naina Das answered • Feb 24, 2024 |
Explanation:
Down Milling:
- In down milling, the cutting tool rotates in the same direction as the workpiece being cut.
- This type of milling is also known as climb milling.
Chip Thickness:
- The thickness of the chip refers to the amount of material being removed by the cutting tool in one pass.
- In down milling, ... more
In an electro - chemical machining (E C M ) operation, a square hole of diamensions 5 mm x 5 mm is drilled in a block of copper. The current used is 5000 A. Atomic weight of copper is 63 and valency of dissolution is 1. Faraday’s constant is 96,500 Coulomb. The material removal rate (in g/s) is- a)0.326
- b)3.26
- c)3.15 x 103
- d)3.15 x 105
Correct answer is option 'B'. Can you explain this answer?
In an electro - chemical machining (E C M ) operation, a square hole of diamensions 5 mm x 5 mm is drilled in a block of copper. The current used is 5000 A. Atomic weight of copper is 63 and valency of dissolution is 1. Faraday’s constant is 96,500 Coulomb. The material removal rate (in g/s) is
a)
0.326
b)
3.26
c)
3.15 x 103
d)
3.15 x 105
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Naina Das answered • Feb 24, 2024 |
Constant is 96500 C/mol.
First, we need to calculate the volume of copper to be removed in order to drill the square hole. The volume of the square hole can be calculated as follows:
Volume = (5 mm) x (5 mm) x (depth of hole)
Assuming the depth of the hole is 1 mm, the volume of the hole would be:
Volume = (5 mm) x (5 mm) x (1 mm) = 25 mm^3 = 25 x 10^-9... more
First, we need to calculate the volume of copper to be removed in order to drill the square hole. The volume of the square hole can be calculated as follows:
Volume = (5 mm) x (5 mm) x (depth of hole)
Assuming the depth of the hole is 1 mm, the volume of the hole would be:
Volume = (5 mm) x (5 mm) x (1 mm) = 25 mm^3 = 25 x 10^-9... more
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