RSMSSB JE Electrical Mock Test - 5 - Electrical Engineering (EE) MCQ

The correct answer is Section 204.

Key Points

• As per the Rajasthan municipality act, 2009
• Section-204 Provision -
• Sewage and rainwater drains are to be distinct -
  • Whenever it is provided in the Act that steps may be taken for the effectual drainage of any premises,
  • The Municipality may require that there shall be one drain for offensive matter and sewage and
  • Another drain for rain-water and unpolluted sub-soil water, each emptying into separate, municipal drains or
  • Other places are set apart by the Municipality for the discharge of drainage or into other suitable places.

Additional Information

• ​Section-203 Provision -
  • Right of owners and occupiers of buildings or lands to drain into municipal drains.
• Section-205 Provision -
  • Right to carry drain through land or into drain belonging to other person-how and on what conditions to be authorized by the Municipality.
• Section-206 Provision -
  • Work, how to be carried out.​

The correct answer is Jaipur.

Key Points

• Jaipur, the capital city of Rajasthan, is renowned worldwide for its gems and jewelry market.
• Often referred to as the "Pink City" due to its distinctive pink-colored buildings, Jaipur has a long and storied history in the gemstone trade.
• It is one of the largest centers for gem cutting and polishing in the world.
• The city is particularly famous for precious and semi-precious stones, including diamonds, sapphires, emeralds, rubies, garnets, amethysts, and topaz, among others.
• Jaipur's Johari Bazaar is one of the most famous markets where a vast variety of gemstones and jewelry, both traditional Rajasthani and contemporary designs, can be found.

Additional Information

• Ajmer: Famous for the Ajmer Sharif Dargah, the shrine of Sufi Saint Khwaja Moinuddin Chishti, and its proximity to Pushkar, known for its Brahma Temple and annual Camel Fair.
• Alwar: Known for the Sariska Tiger Reserve, the historic Alwar Fort (Bala Quila), and the City Palace, as well as the picturesque Siliserh Lake and Palace.
• Udaipur: Referred to as the "City of Lakes" for its beautiful lakes like Lake Pichola and Fateh Sagar Lake, and renowned for its majestic palaces such as the City Palace and Lake Palace, embodying rich cultural heritage and architectural grandeur.

The correct answer is Marwari and Malvi.

• Among the Rajputs of Malwa, the Rangadi dialect made up of a mixture of Malvi and Marwari is also prevalent.

Additional Information

• Malvi:
  • This is the language spoken in the Malwa region.
  • Some characteristics of both Marwari and Dhodari are found in this dialect.
• Torawati:
  • The southern part of Jhunjhunu district, eastern and south-eastern part of Sikar district and some northern parts of Jaipur district are called Torawati.
• Khairadi:
  • The dialect is spoken in some areas of Shahpura (Bhilwara), Bundi etc., which is a mixture of Mewari, Khodadi and Hadoti.

The correct answer is Mandan.

Key Points

• Kumbhalgarh Fort:
  • The chief architect of Kumbhalgarh Fort was Mandan.
  • This Magnificant fort is located at Rajsamand.
  • This fort was constructed by Rana Kumbha in 1448-1458.
  • Kumbhalmer or Kumbhalmeru are other names for this beautiful fort.

Additional Information

• The Fort is in Guinness Book of Records as the second-highest wall of the world.
• It is also called The Great wall of India.
• This fort was built on a hilltop of the Aravalli ranges.
• The massive gate of Kumbhalgarh fort is known as the Ram Pol (Ram Gate)..
• In 2013, this fort was declared a UNESCO World Heritage Site.

The correct answer is Gangasingh.

Key Points

• Montague Chelmsford's report suggested that there should be a permanent council of Indian kings.
• As a result, the Chamber of Princes was established in 1921.
• It was inaugurated on 8 February 1921 at the Delhi fort.
• Ganga Singh of the princely state of Bikaner was selected as the first chancellor of the Chamber of Princes on 9 February 1921.

Additional Information

The correct answer is Jodhpur. Key Points

• It is located in the Jodhpur district of Rajasthan.
• It was built in memory of Maharaja Jaswant Singh of Jodhpur (1873-1895) by his son Maharaja Sardar Singh (1895-1911) completed in 1906 A.D.
• It is often described as the “Taj Mahal of Marwar”.

Additional Information

• The main hall has been built like a temple where puja (ritual) is also performed.
• Today, it is managed and looked after by the Mehrangarh Museum Trust (MMT) and is open to the public.
• It hosts events like the Rajasthan International Folk Festival and the World Sacred Spirit Festival.

The correct answer is George Thomas.

Key Points

• Rajputana means the Land of Rajputs.
• Mainly the area of Rajasthan was referred to as Rajputana.
• George Thomas was the first person in 1800 who used the word Rajputana for the first time.
• This region was earlier known as Gujratra (an early form of "Gujarat") before it came to be called Rajputana during the medieval period.

Additional Information

• River Mahi and its tributaries are lru, Som, Jakham, Anas, Haran, Chap, Moren, and Bhadar.
• River Luni and its tributaries are Sukdi, Mithdi, Bandi, Khari, Jawai, Leeldi, Guhiya and Saagi

• Rajasthan is a state in northern India.
• It covers 342,239 square kilometres or 10.4 per cent of India's total geographical area.
• It is the largest Indian state by area and the seventh-largest by population.
• Area: 342,239 km²
• Governor: Kalraj Mishra
• Capital: Jaipur
• Population: 6.89 crores
• Chief minister: Ashok Gehlot

• Gilund is a village and an archaeological site located in the Rajsamand district of Rajasthan state in western India.
• It is one of five ancient sites excavated in the Ahar-Banas Complex which also includes the sites of Ahar, Ojiyana, Marmi, and Balathal.
• Out of the 111 reported sites found in the Ahar-Banas Complex, Gilund is the largest.
• The archaeological site was named after the present-day village, Gilund, and is locally known as Modiya Magari which means "bald habitation mound
• Gilund is located in the Banas Basin located within the middle of the Mewar Plain, which lies between the Aravalli Mountains and the Deccan Plateau.
• At the ancient site of Gilund, two mounds labeled as 'eastern' and 'western', measuring 45 ft and 25 ft respectively above the surrounding fields in height and covering an area of 500 X 250 yards were partially excavated by a team under the direction of B. B. Lal during 1959-60.
• Both sites have been occupied since the beginning of the Chalcolithic period, but it is evident that the eastern mound is taller due to a period of longer occupation.

• Gilund was occupied from approximately 3000-1700 BCE as the region’s largest chalcolithic site.
• These years of occupation are divided into three phases: Late Ahar-Banas 2000-1700 BCE, Middle Ahar-Banas 2500-2000 BCE, and Early Ahar-Banas 3000-2500 BCE.
• Here various housing structures have been uncovered, as well as large buildings with long parallel walls, workshops, refuse heaps, and an exterior wall surrounding the site.
• Structures were made from mud brick and burnt brick.
• The variety of stone stools and ground stones discovered also suggest early social complexity as they were used for grain processing and grinding.
• The most common artifacts found in Gilund were ceramics. Although few pieces of pottery and bones dating back to the Mesolithic period, it does not compare to the amount found at Bangor.

• The grasslands and pastures called Beed in the local language are found in Bikaner, Skiar, and Jodhpur.
• Grasses and their values have been recognized since time immemorial as the present-day cereals crops are the cultivated varieties of their wild ancestors.
• The use of grasses as food resources or as fodder has led to extensive breeding programs and improvement in pasture land.
• Grasslands are areas where the vegetation is dominated by grasses.
• However, sedge and rush can also be found along with variable proportions of legumes, like clover, and other herbs

• Rajasthan is a state in northern India. It covers 342,239 square kilometers or 10.4 percent of India's total geographical area.
• It is the largest Indian state by area and the seventh-largest by population.
• Area: 342,239 km²
• Governor: Kalraj Mishra
• Capital: Jaipur
• Population: 6.89 crores
• Chief minister: Ashok Gehlot

The correct answer is Havelis of Amer.

Key Points

• Chittorgarh fort
  • It was constructed by Chitrangad Mori of the King of Mori Rajput clan way back in the 7th century A.D.
  • Bappa Rawal, the founder of the Mewar dynasty, made Chittorgarh his capital.
  • It is located in the Chittor district of Rajasthan.
  • This fort was the capital of the Mewar Kingdom.
  • Chittor Fort is the largest fort in Asia, India, and Rajasthan by area.
  • It is situated on the bank of the Berach river (Banas River tributary).
  • It has a total of seven gates and the main gate is named the Ram Pol.
• Kumbhalgarh Fort:
  • The chief architect of Kumbhalgarh Fort was Mandan.
  • This Magnificant fort is located at Rajsamand.
  • This fort was constructed by Rana Kumbha in 1448-1458.
  • The Fort is in Guinness Book of Records as the second-highest wall of the world.It is also called The Great wall of India.
• Jantar Mantar
  • The Jantar Mantar monument of Jaipur, Rajasthan is a compilation of
  • It is UNESCO WORLD Heritage Site since 2010
  • , built by the Rajput king Sawai Jai Singh II.
  • ​It is an Ancient Equinoctial Sundial/Observatory.
  • The main purpose of this observatory was to compile astronomical tables and predict the time and movements of the sun, earth, and planets.
  • It is UNESCO WORLD Heritage Site since 2010
  • Jai Singh built 5 observatories across northern India between 1724 and 1730.
  • There are a total of 5 Jantar Mantar in India, located in Jaipur, Mathura, New Delhi, Ujjain, and Varanasi.

Additional Information

• There were six Rajput forts in the Aravalli Range constructed and improved between the 5th and 18th centuries
  • Chittorgarh Fort, Kumbhalgarh fort, Sawai MadhopurFortt, Jhalawar fort, Jaipur fort, and Jaisalmer fort are part of these hill forts.

The correct answer is Narendra Mandal - 1925.

Key Points

• Narendra Mandal
  • Established on 8 February 1921 in Delhi, this institution was a union of Indian princely states under the British Empire.
  • It was an advisory and consultative body.
  • Named Narendra Mandal by Alwar Naresh Jai Singh.
  • The first president was Viceroy Lord Reading.
  • The first chancellor was Bikaner Naresh Maharaja Ganga Singh.

Additional Information

• Rajasthan Seva Sangh
  • Established in 1919 by Vijay Singh Pathik, Ramnarayan Chaudhary, and Haribhai Kinkar, inspired by Gandhi, in Wardha (Maharashtra).
  • Its goal was to raise political awareness among the people and solve their difficulties.
  • In 1920, its headquarters were moved to Ajmer.
  • Published the papers Rajasthan Kesari from Wardha and Naveen Rajasthan from Ajmer.
• Desh Hitaishini Sabha
  • Formed on 2 July 1877 in Udaipur under the presidency of Maharana Sajjan Singh.
  • Its purpose was to resolve marriage-related problems among Rajputs.
• All India States People's Conference
  • Its establishment and first session were held in Bombay from 16-18 December 1927 under the presidency of Diwan Bahadur Ramchandra Rao.
  • Its primary goal was to create unity among the princely states and coordinate their movements.
  • Vijay Singh Pathik was made its vice-president, and Ramnarayan Chaudhary became the provincial secretary for Rajasthan and Central India.

The correct answer is a - (iii), b - (ii), c - (iv), d - (i).

Key Points

Additional Information

• Sant Charandas was a major Hindu religious teacher in Delhi during the eighteenth century.
  • Sant Charandas was born in the village Dehra in the Alwar District, Rajsthan in Vikrami Samvat 1760 i.e. 1703 AD in Chyavan Gautriya Bhraguvanshi Dhusar Brahman family according to his BHAKTI SAGAR ADI VANI published by Khemraj Krishnadas publication, Mumbai.
  • After listening to his influences and miracles in Delhi, the then King Muhammadshah also became his Disciple and donated him many villages.
• Lal Giri established the 'Alkhiya Sect' (Sampradaya).
  • He was born in Sulkhiya village (Churu).
  • As per this sect, God is formless.
• Santdas Ji is the originator of this community.
  • The main seat for this community is Dantra(Bhilwara).
  • Santdas Ji wears the dress of gudri that’s why its community name is Gudri community.
• Nawaldas Ji was the originator of this community. The main seat of this community is in Jodhpur.

The correct answer is A-(ii), B-(iii), C-(iv), D-(i).

Key Points

• Bhapang
  • It is a rare single stringed percussion instrument.
  • It originates from the Mewati community in the Alwar district.
  • It is made of the hollow shell of the dry pumpkin called the Tumbi.
  • Zahoor Khan was known to play this instrument very well.
• Nad
  • It is a vertical flute with a single long hollow tube.
  • The player whistles into it and at the same time gurgle a song in his throat or actually sings intermittently.
  • Karna Bheel was famous for playing this instrument.
  • He was also renowned for his 6 ½ feet long moustache, a Guinness World Record.
• Algoza
  • It is a paired woodwind instrument.
  • It consists of two joined beak flutes, one for melody, the second for the drone.
  • Ramnath Choudhary has a mastery of playing algoza with mouth and nose.
• Khartal
  • It is an ancient instrument mainly used in devotional / folk songs.
  • This wooden clapper is a Ghana Vadya which has discs or plates that produce a clinking sound when clapped together.
  • Sadiq Khan was famous to play this instrument.

• Gandhi Sagar dam-Madhya Pradesh
• Rana Pratap Sagar-Rajasthan
• Jawahar Sagar dam-Rajasthan
• Kota Barrage-Rajasthan

• Gandhi Sagar dam
• It is the first of the four dams built on the Chambal River, located on the Rajasthan-Madhya Pradesh border.
• Mainly situated in Madhya Pradesh state.
• Rana Pratap sagar dam
• This dam is located on the Chambal River near Rawatbhata in Chittorgarh district in Rajasthan.
• Jawahar Sagar dam
• It is the third dam in the series of Chambal Valley Projects, located 29 km upstream of Kota city and 26 km downstream of Rana Pratap Sagar dam.
• Kota Barrage
• It is the fourth in the series of Chambal Valley Projects, located about 0.8 km upstream from Kota City in Rajasthan.
• Water released after power generation at Gandhi Sagar dam, Rana Pratap Sagar dam, and Jawahar Sagar Dams, is diverted by Kota Barrage for irrigation in Rajasthan and in Madhya Pradesh through canals on the left and the right sides of the river.

• Madhya Pradesh, a large state in central India, retains landmarks from eras throughout Indian history.
• Begun in the 10th century, it's Hindu and Jain temples at Khajuraho are renowned for their carvings of erotic scenes, most prominently Kandariya Mahadeva, a temple with more than 800 sculptures.
• The eastern Bandhavgarh and Kanha national parks, noted Bengal tiger sanctuaries, offer guided safaris.
• Area: 308,245 km²
• Capital: Bhopal
• Chief Minister: Shivraj Singh Chouhan
• Population: 7.33 crores

The correct answer is On arrival of son-in-law at Sasural.

Key Points

• Pawna Geet is the folk song of Rajasthan.
  • It is sung On the arrival of son-in-law at sasural.

Additional Information

• Some famous folk songs of Rajasthan.
  • Moria - In this folk song, there is anguish of such a girl, whose marriage relationship has been fixed but there is a delay in getting married.
  • Ghoomar - Ghoomar dance is a song sung by women on the occasion of Gangaur or Teej festivals, through which the heroine asks her beloved for decorative means.
  • Gorbandh - Gorbandh is the ornament of camel's neck. In Marwar and Shekhawati region, the song Gorbandh Nakhralo is sung on this ornament. This song describes the makeup of a camel.
  • Jhorawa - Popular song of Jaisalmer region which wife sings in separation of her husband.
  • Mumal - This is a popular song of Jaisalmer region, in which the beauty of princess Mumal of Lodrava is described. This is a graceful song.
  • Sithane - This is a slang song sung on the occasion of marriage, which is sung by women at the time of marriage for the purpose of laughing and addressing Samdhi and her other relatives.
  • Kaman - Kaman means - witchcraft. It is a song sung by women in rural areas to protect her husband from the witchcraft of another woman.
  • Peepli - Marwar is a song sung by women in Bikaner and Shekhawati region during the rainy season.
  • Dhola-Maru - This popular song of Sirohi region is based on the love affair of Dhola-Maru and is sung by Dhadhi people.
  • Lavani - Lavani means to invite. Lavani is sung in the context of the hero calling the heroine.

Auto-Transformer:

In an autotransformer, power is transferred through both conduction and induction processes.

EMF induced in the winding is proportional to the number of turns. Therefore, the secondary voltage can be varied by just varying a secondary number of turns. As winding is common in both circuits, most of the energy is transferred by means of electrical conduction and a small part is transferred through induction.

V2(I1 - I2) = Inductive transfer

V2I1 = Conductive transfer

Concept:

Breaking current:

It expresses the short circuit current that the circuit breaker is capable of breaking under specified transient recovery voltage and power frequency voltage.

It is expressed in kA(RMS) at contact separation. The breaking capacities are of two types:

1. Symmetrical breaking capacity
2. Asymmetrical breaking capacity

Rated symmetrical breaking current,

Here, S is the rating of the circuit breaker

VL is the line voltage of the circuit breaker.

Making current:

It is the peak value of the maximum current loop during sub-transient conditions including the DC component when the breaker closes.

Symmetrical making current= 2.55 × symmetrical breaking current

Solution:

Rating of the machine = 2000 MVA

VL = 33 kV

Rated symmetrical current

∴ Making current = 2.55 × 34.99 kA = 89.226 kA

Concept:

According to Mason’s gain formula, the transfer function is given by

Where,
n = no of forward paths
Mk = kth forward path gain
Δk = the value of Δ which is not touching the kth forward path
Δ = 1 – (sum of the loop gains) + (sum of the gain product of two non-touching loops) – (sum of the gain product of three non-touching loops)

Application:
In the given signal flow graph,
No. of forward path = 1
Gain of forward path: P₁ = 2 × 4 = 8
Loops: L1 = 4 × -1 = - 4, L 2 = 2 × -1 = - 2, L₃ = -0.5, L₄ = 2 × 4 × -1 = -8
Two non-touching loops: (L₁ & L₃) = (- 0.5 × -4) = 2
And, Δ = 1 – (L₁ + L₂ + L₃ + L₄) + (L₁ × L₃)
⇒ Δ = 1 - (- 4 - 2 - 0.5 - 8) + 2 = 17.5 = 35 / 2
Also, Δ1 = 1
By using mason’s gain formula, the transfer function can be written as
TF = (P₁ Δ₁) / Δ = (8 × 1) / (35 / 2) = 16 / 35.
∴ The overall gain of the system represented by the following signal flow graph = 16 / 35.

Concept:

The z parameter for the T network is given by:

Calculation:

So, Z₁₁ = 28 Ω

• Semiconductors have a negative temperature coefficient.
• A negative coefficient for a material means that its resistance decreases with an increase in temperature.
• For semiconductors, the resistivity decreases with an increase in temperature because more free charge carriers (electrons and/ or holes) are available for conduction.
• Hence, pure semiconductor materials (silicon and germanium) typically have negative temperature coefficients of resistance.

This is explained with the help of the below graph:

Important Point

The temperature coefficient for a conductor is positive, i.e. the resistance of a conductor increases with an increase in temperature.

This is explained as shown:

Draft: The small pressure difference which causes a flow of gas to take place is termed as a draught. The function of the draught, in the case of a boiler, is to force air to the fire and to carry away the gaseous products of combustion.

Drafts may be classified as:

Natural draught is produced by the use of a chimney.

Natural draught: A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it.

In natural draught, any mechanical device like a pump or fan is absent which leads to no consumption of energy and the total cost of operation as compared to forced draught is less.

The losses in the alternator are included both copper losses and core losses.

As the losses of the alternator are independent of the electrical power factor, hence power factor does not come into the picture while we calculate and estimate the power rating of an alternator.

Rating of alternators is generally expressed in VA or kVA or MVA.

Additional Information

• Rating of Wattmeter is expressed in kW.
• Rating of Energy meter is expressed in kWh.

Concept:

The Laplace transform resistance, inductor, and capacitance are given by:

1. Resistance: R
2. Inductor: sL
3. Capacitor: 1/sC

​Calculation:

The circuit diagram in the Laplace domain is given below:

Applying voltage division rule across capacitor:

The connections of a three-phase energy meter for measuring three-phase power, three wire energy is similar to the connections of a two wattmeter for power measurement

Two Wattmeter Method of Power Measurement

The total power measured by the wattmeter method is:

Energy meter for Energy Measurement

The energy measured by an energy meter is:
E = P × t
E = (V × I) × t

Similarities Between the Connections:

• Both the three-phase energy meter and the two-wattmeter method are typically used in a three-phase, three-wire system where there is no neutral wire.
• Both methods rely on two current coils to measure power in a three-phase, three-wire system.
• Both methods use voltage coils to measure the line-to-line voltage between phases.
• Both methods sum the power of two phases to calculate the total power in the system.

Concept:

Resonance:

• In an electrical circuit, the condition that exists when the inductive reactance and the capacitive reactance are of equal magnitude, causing electrical energy to oscillate between the magnetic field of the inductor and the electric field of the capacitor, is termed resonance.
• In a series RLC circuit at resonance, inductive reactance (XL) is equal to capacitive reactance (XC). The circuit becomes purely resistive, i.e. at resonance: XL = XC

The impedance at resonance becomes:

​

• The impedance-frequency curve is shown below:

Calculation:

Current flowing through the circuit at resonance =v/z
= v/R = 100/10 =10 A

Concept:
The instantaneous value is the value of an alternating quantity at a particular instant of time in the cycle.
The standard equation of sinusoidal current wave is V = V_m sinωt
Im = maximum value

ω = 2πf
f = frequency

Calculation:

Concept:

In a three-phase balanced system, the total power consumed is given by

P = √3 VL­IL cos ϕ

In a star-connected three-phase system,

VL = √3 × Vph

And IL = Iph

In a delta connected three-phase system,

VL = Vph

IL = √3 × Iph

I_ph = V_L/Z

Where,
VL is line voltage
Vph is phase voltage
IL is line current
Iph is the phase current

Calculation:
The given load is a delta-connected load.
VL = Vph = 415 V
Inductive reactance = X = 12 Ω
R = 8 Ω
Impedance Zph = (8 + j12) Ω = 14.42 ∠56.30°
ϕ = 56.30°
Power factor = cos ϕ = 0.555

Phase current

Line current, IL = √3Iph = √3 × 28.78 = 49.85 A

Total power consumed, P = √3 VL­IL cos ϕ

P = √3 × 415 × 49.85 × 0.555 = 19887 W

∴ Power consumed by each phase = P / 3 = 19887 / 3

Power consumed by each phase = 6629 W

• The Gate turn off thyristor (GTO) is a four-layer PNPN power semiconductor switching device that can be turned on by a short pulse of gate current and can be turned off by a reverse gate pulse.
• The magnitude of latching, holding currents is more. The latching current of the GTO is several times more as compared to conventional thyristors of the same rating.
• On state voltage drop and the associated loss is more.
• Due to the multi-cathode structure of GTO, triggering gate current is higher than that required for normal SCR.
• The magnitude of gate current is about 30% of anode current and it flows for a short duration to turn-off the thyristor.
• Gate drive circuit losses are more. Its reverse voltage blocking capability is less than the forward voltage blocking capability.
• GTO has the capability of being turned off by a negative gate – current pulse

Concept:

String Efficiency of SCR: String Efficiency of SCR is the degree of capacity utilization of individual SCRs in a string of series / parallel connected SCRs. String efficiency is always less than 1.

String Efficiency

Where,

• V = Actual voltage of whole string
• I = Actual current of whole string
• V₁ = Voltage rating of one SCR
• I1 = Current rating of one SCR
• N = Total number of SCRs in a string
  

Derating Factor (DFR) of SCR: Derating Factor is the amount by which the string efficiency deviates from unity or 100%.

DFR = [1 – String Efficiency]

DFR = [100 – % String Efficiency]

• Derating Factor gives an idea of unused capacity available in a sting of SCRs.
• That's why it is a measure of reliability of string.
• The lesser the value of sting efficiency, the lesser will be voltage / current sharing by the individual SCRs.
• It means, more unused capacity will be available with the string and hence more DFR.
• But lesser string efficiency increases the cost of string.
• So that a compromise is made in between economy and reliability by properly designing a value of string efficiency.

Calculation :

Given, String efficiency = 80% = 0.8

∴ Derating factor (DFR) = 1 - 0.8

∴ DFR = 0.2