|
|
Mihir ChawlaEduRev Electrical Engineering (EE) |
|
Mihir Chawla
EduRev Electrical Engineering (EE)
|
Content, tests & courses saved by you for accessing later. (visible to you only)
Discussed Questions
|
Mihir Chawla upvoted • 5 days ago |
A single phase, 50 Hz, core-type trans-fomer has square cores of 20 side. The permissible flux density is
1 Wb/m2 If the stacking factor is 0.9, the voltage induced per turn is- a)6
- b)11
- c)8
- d)14
Correct answer is option 'C'. Can you explain this answer?
A single phase, 50 Hz, core-type trans-fomer has square cores of 20 side. The permissible flux density is
1 Wb/m2 If the stacking factor is 0.9, the voltage induced per turn is
1 Wb/m2 If the stacking factor is 0.9, the voltage induced per turn is
a)
6
b)
11
c)
8
d)
14
|
Knowledge Hub answered |
|
|
Mihir Chawla upvoted • 4 weeks ago |
The efficiency of a 20 KVA, 2000/200 V, single phase transformer at unity pf is 98%. The given total losses at full load is 200 W. The pu resistance is?- a)0.01
- b)0.1
- c)1.0
- d)0.0196
Correct answer is option 'A'. Can you explain this answer?
The efficiency of a 20 KVA, 2000/200 V, single phase transformer at unity pf is 98%. The given total losses at full load is 200 W. The pu resistance is?
a)
0.01
b)
0.1
c)
1.0
d)
0.0196
|
Crack Gate answered |
pu resistance = Ohmic losses/KVA = 200/20000 = 0.01 pu.
|
|
Mihir Chawla asked • Feb 17, 2025 |
What is the primary focus of the joint military exercise Cyclone 2025 conducted by India and Egypt?- a) Enhancing naval capabilities
- b) Improving military cooperation in desert environments
- c) Conducting humanitarian missions
- d) Strengthening air force operations
Correct answer is option 'B'. Can you explain this answer?
What is the primary focus of the joint military exercise Cyclone 2025 conducted by India and Egypt?
a)
Enhancing naval capabilities
b)
Improving military cooperation in desert environments
c)
Conducting humanitarian missions
d)
Strengthening air force operations
|
Crafty Classes answered |
The joint military exercise Cyclone 2025 primarily aims at enhancing military cooperation in desert environments, specifically focusing on the operational readiness of special forces from both countries. This exercise includes training in counter-terrorism, reconnaissance, and specialized military missions, all of which are critical for effective operations in challenging terrains like deserts. An interesting fact about such exercises is that they not only improve tactical skills but also foster stronger diplomatic ties between the participating nations.
|
|
Mihir Chawla upvoted • Feb 08, 2025 |
In the circuit shown below, steady state was reached when the switch ‘s’ was open. The switch was closed at t = 0. Then initial value of the current through the capacitor 2C is?
- a)0 A
- b)1 A
- c)2 A
- d)3 A
Correct answer is option 'C'. Can you explain this answer?
In the circuit shown below, steady state was reached when the switch ‘s’ was open. The switch was closed at t = 0. Then initial value of the current through the capacitor 2C is?
a)
0 A
b)
1 A
c)
2 A
d)
3 A
|
Cstoppers Instructors answered |
At steady-state conditions, the capacitor acts as an open circuit, and the inductor acts as a short circuit.
Now considering t = 0-,
Now voltage across 4 Ω resistor is 12 V.
Considering t = 0+
By KCL, 
i2c (0+) = 2 A
The initial value of the current through the capacitor 2 C is 2 A.
|
|
Mihir Chawla upvoted • Jan 30, 2025 |
Complete the following sentence.I was ___ ___ for the bus and then I ___ sight of Craig passing by.- a)Here, waiting, cot
- b)There, waiting, caught
- c)Here, weighting, caught
- d)Hare, waiting, caught
Correct answer is option 'B'. Can you explain this answer?
Complete the following sentence.
I was ___ ___ for the bus and then I ___ sight of Craig passing by.
a)
Here, waiting, cot
b)
There, waiting, caught
c)
Here, weighting, caught
d)
Hare, waiting, caught
|
Vaishnavi Singh answered |
The word 'here' and 'there' both can be used here but should be followed with 'waiting' as no other word can fit here. The word 'caught' is correct here as 'catch a sight' means 'to see something.' Option 2 thus has the correct combination of words. The word 'cot' means 'a small bed with high barred sides for a baby or very young child.'
|
|
Mihir Chawla upvoted • Jan 25, 2025 |
For the network shown in the figure below, the frequency (in rad/s) at which the maximum phase lag occurs is, ___________.
Correct answer is between '0.30,0.33'. Can you explain this answer?
For the network shown in the figure below, the frequency (in rad/s) at which the maximum phase lag occurs is, ___________.
|
Pioneer Academy answered |
Given circuit is a lag compensator and transfer function is given as
On comparison we get, T = 1
βT = 10 ⇒ β = 10
The frequency at which maximum lead occurs is ωm = 1/T√β
On comparison we get, T = 1
βT = 10 ⇒ β = 10
The frequency at which maximum lead occurs is ωm = 1/T√β
In silicon at T = 300 K if the Fermi energy is 0.22 eV above the valence band energy, the value of p0 is- a)2 x 1015 cm3
- b)1015 cm3
- c)3 x 1015 cm3
- d)4 x 1015 cm3
Correct answer is option 'A'. Can you explain this answer?
In silicon at T = 300 K if the Fermi energy is 0.22 eV above the valence band energy, the value of p0 is
a)
2 x 1015 cm3
b)
1015 cm3
c)
3 x 1015 cm3
d)
4 x 1015 cm3
|
|
Mihir Chawla answered • Jan 20, 2025 |
Understanding Hole Concentration (p0) in Silicon
To determine the hole concentration (p0) in silicon at T = 300 K, we need to apply the concepts of semiconductor physics, particularly the relationship between the Fermi level, valence band energy, and intrinsic carrier concentration.
Key Parameters
- Fermi Energy (Ef): Given as 0.22 eV above the valence band edge... more
To determine the hole concentration (p0) in silicon at T = 300 K, we need to apply the concepts of semiconductor physics, particularly the relationship between the Fermi level, valence band energy, and intrinsic carrier concentration.
Key Parameters
- Fermi Energy (Ef): Given as 0.22 eV above the valence band edge... more
A single-phase full-bridge diode rectifier delivers a constant load current of 20 A. The rms and average values of source current are respectively- a)20 A, 20 A
- b)0 A, 20 A
- c)10 A, 20 A
- d)10 A, 10 A
Correct answer is option 'A'. Can you explain this answer?
A single-phase full-bridge diode rectifier delivers a constant load current of 20 A. The rms and average values of source current are respectively
a)
20 A, 20 A
b)
0 A, 20 A
c)
10 A, 20 A
d)
10 A, 10 A
|
|
Mihir Chawla answered • Jan 20, 2025 |
Understanding the Full-Bridge Diode Rectifier
In a single-phase full-bridge diode rectifier, the output load current is derived from the AC source. The behavior of the source current is crucial in determining both its RMS (Root Mean Square) and average values.
Constant Load Current
- When a constant load current of 20 A is delivered, it indicates that the load is consu... more
In a single-phase full-bridge diode rectifier, the output load current is derived from the AC source. The behavior of the source current is crucial in determining both its RMS (Root Mean Square) and average values.
Constant Load Current
- When a constant load current of 20 A is delivered, it indicates that the load is consu... more
|
|
Mihir Chawla asked • Jan 10, 2025 |
What is the primary objective of the congestion pricing initiative launched in New York City in January 2025?- a) To collect taxes from all drivers
- b) To reduce traffic congestion and improve air quality
- c) To increase the number of vehicles on the road
- d) To promote the use of bicycles in the city
Correct answer is option 'B'. Can you explain this answer?
What is the primary objective of the congestion pricing initiative launched in New York City in January 2025?
a)
To collect taxes from all drivers
b)
To reduce traffic congestion and improve air quality
c)
To increase the number of vehicles on the road
d)
To promote the use of bicycles in the city
|
|
Crafty Classes answered |
The primary objective of the congestion pricing initiative in New York City is to reduce traffic congestion, especially during peak hours, and to improve air quality. By charging a fee for vehicles entering the most congested areas of Manhattan, the city aims to incentivize drivers to seek alternative modes of transportation, thereby decreasing the number of cars on the road. This strategy has been successfully implemented in other global cities, leading to notable environmental and economic benefits. An interesting fact is that cities like London and Singapore have reported significant reductions in pollution levels following the implementation of similar pricing schemes.
A 3-phase, star-connected, round-rotor synchronous generator rated at 10 kVA, 230 V has an armature resistance of 0.15 Q per phase and a synchronous reactance of 1.2 Q pe phase. Calculate the percent voltage regulation at ful... more
|
|
Mihir Chawla answered • Dec 14, 2024 |
Voltage Regulation Calculation
To calculate the percent voltage regulation of a synchronous generator at full load, we can use the formula:
Percent Voltage Regulation = (V_no_load - V_full_load) / V_full_load * 100
Where:
- V_no_load is the terminal voltage at no load (230 V).
- V_full_load is the terminal voltage at full load considering armature resistance and syn... more
To calculate the percent voltage regulation of a synchronous generator at full load, we can use the formula:
Percent Voltage Regulation = (V_no_load - V_full_load) / V_full_load * 100
Where:
- V_no_load is the terminal voltage at no load (230 V).
- V_full_load is the terminal voltage at full load considering armature resistance and syn... more
What are the different between isolator and an insulator?
|
|
Mihir Chawla answered • Oct 13, 2024 |
Understanding Isolators
Isolators are devices used in electrical circuits to ensure safety and maintenance. They provide a physical separation between different sections of a circuit. Their primary function is to isolate a part of the circuit from the rest, ensuring that no current flows through during maintenance or repair.
Key Features of Isolators:
Understanding Insulators
Insulators are materials that resist the flow of electric current. They are used in various applications to prevent unwanted current flow and to protect conductors and devices from electrical shock.
Key Features of Insulators:
Differences Between Isolators and Insulators
In summary, while both isolators and insulators play vital roles in electrical systems, their functions, operations, and purposes differ significantly. Understanding these distinctions is crucial for ensuring safety and efficiency in electrical engineering.
Isolators are devices used in electrical circuits to ensure safety and maintenance. They provide a physical separation between different sections of a circuit. Their primary function is to isolate a part of the circuit from the rest, ensuring that no current flows through during maintenance or repair.
Key Features of Isolators:
- Mechan... more Isolators operate mechanically, often using a switch mechanism.
- On/Off Function: They can be fully opened or closed, ensuring complete disconnection.
- Safety: They enhance safety by preventing accidental energization during maintenance.
Understanding Insulators
Insulators are materials that resist the flow of electric current. They are used in various applications to prevent unwanted current flow and to protect conductors and devices from electrical shock.
Key Features of Insulators:
- Electrical Resistance: Insulators have high resistance, preventing current from passing through them.
- Material Composition: Common materials include rubber, glass, and ceramics.
- Application: Used in power lines, electrical equipment, and household items to ensure safety.
Differences Between Isolators and Insulators
- Function: Isolators are devices for physical separation; insulators are materials that inhibit current flow.
- Operation: Isolators are electromechanical; insulators are passive materials.
- Purpose: Isolators provide safety during maintenance; insulators prevent shock and short circuits.
In summary, while both isolators and insulators play vital roles in electrical systems, their functions, operations, and purposes differ significantly. Understanding these distinctions is crucial for ensuring safety and efficiency in electrical engineering.
|
|
Mihir Chawla asked • Oct 06, 2024 |
What are pumped hydropower projects primarily used for in the energy sector?- a) Generating electricity from fossil fuels
- b) Large-scale energy storage and grid stability
- c) Reducing carbon emissions from power plants
- d) Creation of hydroelectric dams for irrigation
Correct answer is option 'B'. Can you explain this answer?
What are pumped hydropower projects primarily used for in the energy sector?
a)
Generating electricity from fossil fuels
b)
Large-scale energy storage and grid stability
c)
Reducing carbon emissions from power plants
d)
Creation of hydroelectric dams for irrigation
|
EduRev CLAT answered |
Pumped hydropower projects serve as large-scale energy storage systems that help maintain grid stability. They operate by pumping water from a lower reservoir to an upper reservoir when energy demand is low and releasing it through turbines to generate electricity when demand is high. This functionality makes them akin to massive batteries, allowing for the integration of renewable energy sources and balancing supply and demand in the electric grid. An interesting fact about pumped storage is that it is the most widely used form of energy storage globally, illustrating its importance in modern energy systems.
Assertion (A): In a purely capacitive circuit, the current wave is more distorted than the voltage wave.
Reason (R): The harmonics in the current wave are increased in proportion to their frequency numbers.- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'A'. Can you explain this answer?
Assertion (A): In a purely capacitive circuit, the current wave is more distorted than the voltage wave.
Reason (R): The harmonics in the current wave are increased in proportion to their frequency numbers.
Reason (R): The harmonics in the current wave are increased in proportion to their frequency numbers.
a)
Both A and R are true and R is the correct explanation of A.
b)
Both A and R are true but R is not the correct explanation of A.
c)
A is true but R is false.
d)
A is false but R is true.
|
|
Mihir Chawla answered • Sep 04, 2024 |
Understanding the Assertion and Reason
In the context of electrical engineering, it's essential to analyze the behavior of capacitive circuits when it comes to waveforms.
Assertion (A): Current Wave Distortion
- In a purely capacitive circuit, the current waveform does tend to be more distorted compared to the voltage wave.
- This phenomenon occurs due to th... more
In the context of electrical engineering, it's essential to analyze the behavior of capacitive circuits when it comes to waveforms.
Assertion (A): Current Wave Distortion
- In a purely capacitive circuit, the current waveform does tend to be more distorted compared to the voltage wave.
- This phenomenon occurs due to th... more
|
|
Mihir Chawla asked • Aug 27, 2024 |
Where was the newly discovered dinosaur species, Alpkarakush kyrgyzicus, found?- a) Balabansai formation in Kazakhstan
- b) Fergana Depression in Uzbekistan
- c) Altai Mountains in Mongolia
- d) Balabansai formation in Kyrgyzstan
Correct answer is option 'D'. Can you explain this answer?
Where was the newly discovered dinosaur species, Alpkarakush kyrgyzicus, found?
a)
Balabansai formation in Kazakhstan
b)
Fergana Depression in Uzbekistan
c)
Altai Mountains in Mongolia
d)
Balabansai formation in Kyrgyzstan
|
Sushil Kumar answered |
The dinosaur species Alpkarakush kyrgyzicus was unearthed in the Balabansai formation in Kyrgyzstan. This region in Central Asia provided the geological context for the discovery of this ancient predator, shedding light on the prehistoric fauna that once roamed the area.
The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is- a)4
- b)6
- c)8
- d)10
Correct answer is option 'B'. Can you explain this answer?
The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is
a)
4
b)
6
c)
8
d)
10
|
|
Mihir Chawla answered • Jul 24, 2024 |
Explanation:
Understanding the problem:
A 2-bit comparator compares two 2-bit numbers A and B and outputs a logic 1 if A is greater than B.
Solution:
To find the number of combinations for which the output is logic 1, we need to consider all possible combinations of 2-bit numbers A and B.
Calculating possible combinations:
... more
Understanding the problem:
A 2-bit comparator compares two 2-bit numbers A and B and outputs a logic 1 if A is greater than B.
Solution:
To find the number of combinations for which the output is logic 1, we need to consider all possible combinations of 2-bit numbers A and B.
Calculating possible combinations:
... more
While deciding an efficient and economical transmission and distribution system, the preferred distribution system will be _____________- a)single phase, 2 wire
- b)two phase, 3 wire
- c)three phase, 3 wire
- d)three phase, 4 wire
Correct answer is option 'D'. Can you explain this answer?
While deciding an efficient and economical transmission and distribution system, the preferred distribution system will be _____________
a)
single phase, 2 wire
b)
two phase, 3 wire
c)
three phase, 3 wire
d)
three phase, 4 wire
|
|
Mihir Chawla answered • Jun 22, 2024 |
Three phase, 4 wire distribution system
Distribution systems are designed to efficiently and economically transmit electricity from the power plant to consumers. When deciding on the preferred distribution system, a three phase, 4 wire distribution system is often the best choice. Here's why:
Higher Efficiency: A three phase system distributes power more efficiently c... more
Distribution systems are designed to efficiently and economically transmit electricity from the power plant to consumers. When deciding on the preferred distribution system, a three phase, 4 wire distribution system is often the best choice. Here's why:
Higher Efficiency: A three phase system distributes power more efficiently c... more
The latching current of SCR is 18 mA. Its holding current will be- a)6 mA
- b)18 mA
- c)54 mA
- d)12 mA
Correct answer is option 'A'. Can you explain this answer?
The latching current of SCR is 18 mA. Its holding current will be
a)
6 mA
b)
18 mA
c)
54 mA
d)
12 mA
|
|
Mihir Chawla answered • May 23, 2024 |
Explanation:
Definition of Latching and Holding Current:
- Latching Current: It is the minimum current required to turn on an SCR and keep it conducting even after the gate signal is removed.
- Holding Current: It is the minimum current required to keep the SCR conducting once it has been turned on.
Given Data:
- Latching Current (IL) = 18 ... more
Definition of Latching and Holding Current:
- Latching Current: It is the minimum current required to turn on an SCR and keep it conducting even after the gate signal is removed.
- Holding Current: It is the minimum current required to keep the SCR conducting once it has been turned on.
Given Data:
- Latching Current (IL) = 18 ... more
What is the form factor use in power system ?
|
|
Mihir Chawla answered • May 07, 2024 |
Form Factor in Power Systems
Form factor in power systems refers to the ratio of the RMS value of a periodic waveform to its average value. It is an important parameter used in power system analysis and design.
Significance of Form Factor
- Form factor is used to characterize the shape of a waveform and is essential in determining the efficiency and performance o... more
Form factor in power systems refers to the ratio of the RMS value of a periodic waveform to its average value. It is an important parameter used in power system analysis and design.
Significance of Form Factor
- Form factor is used to characterize the shape of a waveform and is essential in determining the efficiency and performance o... more
A, B and C together can complete a work in 8 days. If A is 50% more efficient than B and B is 50% less efficient than C, then B alone will complete the same work in:- a)16 days
- b)24 days
- c)48 days
- d)36 days
- e)None of these
Correct answer is option 'D'. Can you explain this answer?
A, B and C together can complete a work in 8 days. If A is 50% more efficient than B and B is 50% less efficient than C, then B alone will complete the same work in:
a)
16 days
b)
24 days
c)
48 days
d)
36 days
e)
None of these
|
|
Mihir Chawla answered • Feb 10, 2024 |
Solution:
Let's assume that C can complete the work in x days.
Efficiency of B compared to C:
B is 50% less efficient than C. This means B can complete only half the work that C can complete in the same time. So, B can complete the work in 2x days.
Efficiency of A compared to B:
A is 50% more efficient than B. This means A can complete 1.5 times the work ... more
Let's assume that C can complete the work in x days.
Efficiency of B compared to C:
B is 50% less efficient than C. This means B can complete only half the work that C can complete in the same time. So, B can complete the work in 2x days.
Efficiency of A compared to B:
A is 50% more efficient than B. This means A can complete 1.5 times the work ... more
|
|
Mihir Chawla asked • Dec 14, 2023 |
उतारू या शब्दाचा योग्य समानार्थी शब्द ओळखा.- a)प्रवासी
- b)संतोष
- c)खाली
- d)उतरण
Correct answer is option 'A'. Can you explain this answer?
उतारू या शब्दाचा योग्य समानार्थी शब्द ओळखा.
a)
प्रवासी
b)
संतोष
c)
खाली
d)
उतरण
|
EduRev GATE answered |
समानार्थी शब्द-
- एखाद्या शब्दासाठी सारख्याच अर्थाचा असलेला दुसरा प्रतिशब्द म्हणजेच समानार्थी शब्द होय.
- मराठी भाषा ही अतिशय समृद्ध भाषा आहे, ज्यामुळे अनेक शब्दांना त्याच अर्थाचे किंवा मिळतेजुळते अनेक शब्द आपल्याला मराठीत सापडतात.
- सम + अर्थी(समान अर्थी) अशी जेव्हा शब्दाची फोड होते तेव्हा आपल्याला समानार्थी शब्द समजायला अधिक सोपे जाते.
|
|
Mihir Chawla asked • Oct 26, 2023 |
If an electron, a neutron and a proton having same momenta enter perpendicularly to a magnetic field, then: - a)curved path of electron, neutron and proton will be same
- b)they will move undeflected
- c)curved path of electron will be more curved than that of proton
- d)curved path of electron and proton will be same but neutron will move undeflected
Correct answer is option 'D'. Can you explain this answer?
If an electron, a neutron and a proton having same momenta enter perpendicularly to a magnetic field, then:
a)
curved path of electron, neutron and proton will be same
b)
they will move undeflected
c)
curved path of electron will be more curved than that of proton
d)
curved path of electron and proton will be same but neutron will move undeflected
|
Vertex Academy answered |
- The magnetic force exerted on a charged particle moving in a magnetic field is given by the Lorentz force equation, which depends on the charge of the particle. Since the neutron is uncharged, it will not experience a magnetic force and will move undeflected.
- Both the electron and the proton are charged, so they will experience a magnetic force. However, since they have opposite ... more
- Since they have the same momentum and opposite charge, the curved paths of the electron and proton will be the same in magnitude but opposite in direction. The neutron, being uncharged, will move undeflected.
|
|
Mihir Chawla asked • Oct 19, 2023 |
Synchroscope is used to check _________.- a)Frequency difference
- b)Phase angle difference.
- c)Phase sequence
- d)RMS voltage
Correct answer is option 'A'. Can you explain this answer?
Synchroscope is used to check _________.
a)
Frequency difference
b)
Phase angle difference.
c)
Phase sequence
d)
RMS voltage
|
|
Crack Gate answered |
Concept:
- Synchroscopes are instruments that show the relative frequency (speed) difference and the phase angle between the machine to be synchronized and the system voltage.
- The synchroscope works based on AC motor in principle. It has two poles connected across any two phases (say red and yellow) of the incoming machine. The armature windings are supplied from the similar two phases (red and yellow) in the switch board bus - bars.
- Synchronization of alternator means connecting an alternator into the grid in parallel with many other alternators, that is in a live system of constant voltage and constant frequency.
- Before connecting an alternator into the grid, the following conditions must be satisfied:
- Equal voltage: The terminal voltage of incoming alternator must be equal to the bus-bar voltage.
- Same frequency: The frequency of generated voltage must be equal to the frequency of the bus-bar voltage.
- Phase sequence: The phase sequence of the three phases of alternator must be similar to that of the grid or busbars. Phase angle: The phase angle between the generated voltage and the voltage of the grid must be zero.
- The first condition of voltage equality can be satisfied by a voltmeter. To satisfy the conditions of equal frequency and identical phases, one of the following two methods can be used: Synchronization using incandescent lamp Synchronization using synchroscope
|
|
Mihir Chawla asked • Sep 03, 2023 |
The best tool to ensure that there is neither piling up of stocks nor shortage of materials in a project to run it economically is- a)Economic order quantity
- b)ABC analysis
- c)Inventory control and management
- d)Gantt chart method
Correct answer is option 'A'. Can you explain this answer?
The best tool to ensure that there is neither piling up of stocks nor shortage of materials in a project to run it economically is
a)
Economic order quantity
b)
ABC analysis
c)
Inventory control and management
d)
Gantt chart method
|
Anjana Singh answered |
Economic Order Quantity (EOQ): EOQ is a mathematical tool that companies use to manage inventory and minimize the holding cost. EOQ represents their ideal size of holding the inventory without much investment on inventory.
ABC analysis: ABC analysis is a technique of inventory management which represents the inventory items based on their importance. In ABC analysis ranking of items is done based on their demand, cost and risk to holding it.
Inventory control and management: With the help of Inventory control process controlling of inventory cost is minimized. Inventory control and management is used to manage inventory for the holding of it such that neither any extra nor any shortage of inventory will occur. Inventory control and management is the task of daily work management of inventory.
Gantt chart method: Gantt chart is a project management tool. With the help of Gantt chart project planning is carried out.
|
|
Mihir Chawla asked • Aug 18, 2023 |
The primary winding of a C.T. has _________- a)a larger number of turns
- b)no turns at all
- c)intermediate number of turns
- d)a few turns
Correct answer is option 'D'. Can you explain this answer?
The primary winding of a C.T. has _________
a)
a larger number of turns
b)
no turns at all
c)
intermediate number of turns
d)
a few turns
|
|
Anjana Singh answered |
The primary winding of a C.T. has a very few number of turns. It is connected in series with the load circuit through which the primary current flows.
|
|
Mihir Chawla asked • Aug 16, 2023 |
Electronic ohmmeter uses OP-AMP as a/an:- a)Summer
- b)Multiplier
- c)Integrator
- d)Buffer amplifier
Correct answer is option 'D'. Can you explain this answer?
Electronic ohmmeter uses OP-AMP as a/an:
a)
Summer
b)
Multiplier
c)
Integrator
d)
Buffer amplifier
|
|
Anjana Singh answered |
Concept of Buffer:
- A Buffer is an op-amp circuit whose output voltage straight away follows the input voltage. i.e. output voltage equivalent to the input voltage.
- The Op-amp circuit does not provide any amplification thus, its voltage gain is unity.
- The voltage follower is used as a buffer amplifier, isolation amplifier, unity gain amplifier as the output follows the input.
- The voltage follower provides no alternation or no amplification but only buffering.
Characteristics:
- High input impedance and Low output impedance hence low loading effect and used in Electronics measuring instruments
- Current Gain & power gain high
- Voltage gain unity
Fetching relevant content for you
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup