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AIIMS CRE Electrical JE/AE Mock Test- 2 - NEET MCQ


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30 Questions MCQ Test AIIMS CRE Group B & C Mock Test Series - AIIMS CRE Electrical JE/AE Mock Test- 2

AIIMS CRE Electrical JE/AE Mock Test- 2 for NEET 2025 is part of AIIMS CRE Group B & C Mock Test Series preparation. The AIIMS CRE Electrical JE/AE Mock Test- 2 questions and answers have been prepared according to the NEET exam syllabus.The AIIMS CRE Electrical JE/AE Mock Test- 2 MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AIIMS CRE Electrical JE/AE Mock Test- 2 below.
Solutions of AIIMS CRE Electrical JE/AE Mock Test- 2 questions in English are available as part of our AIIMS CRE Group B & C Mock Test Series for NEET & AIIMS CRE Electrical JE/AE Mock Test- 2 solutions in Hindi for AIIMS CRE Group B & C Mock Test Series course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt AIIMS CRE Electrical JE/AE Mock Test- 2 | 100 questions in 90 minutes | Mock test for NEET preparation | Free important questions MCQ to study AIIMS CRE Group B & C Mock Test Series for NEET Exam | Download free PDF with solutions
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 1
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Which of the following is not a valid file extension of an audio file?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 1

A RAR file is a type of compressed file that may hold one or more files and directories. Simply described, a Roshal Archive Compressed file is a different format for compressing files and archiving them. RAR files function similarly to ZIP files.

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 2
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Two DC series motors connected in series draw current I from supply and run at speed N. When the same two-motor are connected in parallel, taking current I from the supply, the speed of each motor will be

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 2
In the case of series

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AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 3
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Which one of the following is a valid value of coefficient of coupling between two inductors?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 3

Coefficient of coupling (K) = 0.9

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 4
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A 100 MVA, 50 Hz generator feeding power through a double circuit transmission line with initial rotor angle 60°. A 3 phase fault occurs at middle point of one of the lines. the internal voltage of the generator is 1.5 pu and equivalent transfer admittance during fault is 0.5 pu and the infinite bus voltage is 1.1 pu. The generator has an inertia constant of 4 MJ/MVA and it was delivering 1 pu power prior of the fault. The inertia constant in (MJ – sec/elect degree) is –
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 4

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 5
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Running cost of a power plant is based on the cost of-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 5
All plants in India has their different electricity generation cost depends on their location, age, maintenance practices, operation efficiency etc.

It would range between 2.5 - 6.5 Rs/kWh currently in India.

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 6
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The value of demand factor is-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 6
The word “demand” itself says the meaning of Demand Factor. The ratio of the maximum coincident demand of a system, or part of a system, to the total connected load of the system.

• Demand Factor = Maximum demand / Total connected load

• For example, an oversized motor 20 Kw drives a constant 15 Kw load whenever it is ON. The motor demand factor is then 15/20 =0.75= 75 %.

• Demand Factor is expressed as a percentage (%) or in a ratio (less than 1).

• Demand factor is always < =1.

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 7
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A multimeter has different shunts, which increase the-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 7
A meter shunt is a useful means of extending the current range of an ammeter. As current divides between two resistors in parallel it is possible to increase the range of a DC microammeter or milliammeter by paralleling an additional resistance with the inherent DC resistance of the meter itself. This is called a meter shunt.
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 8
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If the number of valence electrons of atom is 4 then the substance is usually?
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 8
The substance is usually a conductor. Good example of semiconductors are silicon, germanium, selenium which are not even close to group one two or three.
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 9
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The short circuit KVA is maximum when fault occurs
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 9
Sources of short-circuit current that are normally taken under consideration include: - Utility Generation - Local Generation - Synchronous Motors - Induction Motors - Alternate Power Sources Short circuit calculations should be done at all critical points in the system. These would include: - Service Entrance - Transfer Switches - Panel Boards - Load Centers - Motor Control Centers - Disconnects - Motor Starters - Motor Starters
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 10
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In an induction motor, skew of the rotor BQR reduces-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 10
In Squirrel cage rotor, slots in lamination or rotor core are not made parallel to the rotor shaft. A slight angle is maintained due to some advantages. This is called the rotor Skew.

Rotor of an Induction Motor skewed due to following reason…

• With the bar skewed, the amount of the bar cutting the field line grows continuously and the next bar starts cutting the field lines as the first finishes. Due to this, we get Uniform Torque.

• To run quietly by reducing the magnetic hum, reduce rotor locking tendency. Rotor locking tendency occurs when rotor teeth remain directly under stator teeth thus they might be magnetically attracted.

• Primarily to prevent the cogging phenomenon. It is a phenomenon in which, if the rotor conductors are straight, there are chances of magnetic locking or strong coupling between rotor & stator.

• Increase effective Magnetic Coupling between Stator and Rotor Fluxes.

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 11
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Find the Norton equivalent current source at terminal (x)-y in figure.
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 11

Remember that a current source is a component whose job is to provide a constant amount of current, outputting as much or as little voltage necessary to maintain that constant current.

As with Thevenin’s Theorem, everything in the original circuit except the load resistance has been reduced to an equivalent circuit that is simpler to analyze. Also similar to Thevenin’s Theorem are the steps used in Norton’s Theorem to calculate the Norton source current (INorton) and Norton resistance (RNorton).

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 12
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A current of 10 MA through human body will-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 12
EFFECTS OF ELECTRICAL CURRENT IN THE HUMAN BODY Current Reaction Below 1 Milliampere Generally not perceptible 1 Milliampere Faint Tingle 5 Milliampere Slight shock felt. Not painful but disturbing. Average individuals can let go. Strong involuntary reactions can lead to other injuries. 6 to 25 Milliampere (women) Painful shocks. Loss of muscle control. 9 to 30 Milliampere (men) The freezing current or “let go” range. If extensor muscles are excited by shock, the person may be thrown away from the power source. Individuals cannot let go. Strong involuntary reactions can lead to other injuries. 50 to 150 Milliamperes Extreme pain, respiratory arrest, severe muscle reactions. Death is possible. 1.0 to 4.3 Amperes Rhythmic pumping action of the heart ceases. Muscular contraction and nerve damage occur; death is likely. 10 Amperes Cardiac arrest, severe burns, death is probable.

Use your electrical smarts and follow these safety Do’s and Don’ts:

Do’s Don’ts Only use plugs that fit the outlet. Make sure that electrical connections are tight. Check that the wire insulation is in good condition. Keep machines and tools properly lubricated. Use extension cords only when necessary and only if they are rated high enough for the application. Use waterproof cords outside. Only use approved extension lamps. Leave at least 3 feet of workspace around electrical equipment for instant access. Keep your work area clean. Be especially careful with oily rags, paper, sawdust, or anything that could burn. Follow manufacturer’s instructions for all electrical equipment. Leave electrical repairs to skilled maintenance personnel and licensed electricians. Don’t overload outlets or motors. Don’t let grease, dust, or dirt build up on machinery. Don’t place cords near heat or water. Don’t run cords along the floor where they can be damaged. Don’t touch anything electric with wet hands. Don’t put anything but an electric plug into an electric outlet. Don’t use temporary wiring in place of permanent wiring.

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 13
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A coil wound over an iron carries certain current and establishes flux in the ring. If the area of a x-section of the ring is doubted, the flux density in the core ____.
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 13
Hence, the correct option is (B)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 14
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A 50Hz ac voltage is measured with a moving iron voltmeter and a rectifier type ac voltmeter connected in parallel. If the meter readings V1 are V2 and respectively and the meters are free from calibration errors, then the form factor of the ac voltage may be estimated as______.
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 14
Form factor of the wave = rms Value / Mean Value

Moving iron Instrument will show rms value. Rectifier voltmeter is calibrate to read rms value of sinusoidal voltage, i.e. with form factor of 1.11

∴ Mean value of the applied voltage = V2 /1.11

∴ Form factor = V1 / (V2/1.11) = (1.11V1) / V2

Hence, the correct option is (b).

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 15
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For the AC circuit as shown below, if the rms voltage across the resistor is 120V, what is the value of the inductor?
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 15

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 16
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Ohm's law is applicable to_____.
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 16
Hence, the correct option is (D)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 17
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Diversity factor is the ratio of_____
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 17
Hence, the correct option is (A)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 18
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The load factor for domestic loads may be taken as _____
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 18
Hence, the correct option is (D)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 19
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All the resistances in figure shown below are (1Ω) each. The value of current 'T' is:-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 19
Hence, the correct option is (D)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 20
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A capacitor used on 230 V AC Supply should have a peak voltage rating of-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 20
First, there is the voltage rating. The voltage rating on a capacitor is of course a maximum DC (i.e. a peak) rating. For 50/60Hz mains we're talking about a sinusoidal voltage waveform with an RMS value of for instance 230V, so the DC peak value of such a supply is Vrms⋅√2 or about 1.4 times this quoted value. If you're already dealing with a DC system, there is no math involved. The peak rating of your cap should be more than the peak DC voltage you expect over the device.

For longevity and nonlinear effects at high stresses, it is recommended to keep ample margin on these ratings, especially on the voltage rating. For 230VAC applications, even though typically you wouldn't expect more than about 325V peak over your lines, choose at least a 400V or better even a 450V capacitor. And yes, even when the manufacturer specifies survivability of the part at higher voltages. Survivability does not mean proper operation. It just means that it doesn't blow up and cause a mess.

Hence, the correct option is (A)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 21
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The skin effect does not depend on-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 21
Impedance of round wire[edit] The internal impedance of round wire is given by 5:40.

The internal impedance is complex and may be interpreted as a resistance in series with an inductance. The inductance accounts for energy stored in the magnetic field inside the wire. It has a maximum value of H/m at zero frequency and goes to zero as the frequency increases. The zero-frequency internal inductance is independent of the radius of the round wire.

The internal inductance of round wire vs. the ratio of skin depth to radius. The inductance asymptotically approaches (μ / 8 π ) H/m for large skin depth. The internal inductance is associated with the magnetic field inside the wire. As skin depth becomes small, the inductance goes linearly to zero.

Hence, the correct option is (D)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 22
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Non-metallic conduit for wiring are generally made of-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 22
Electrical conduit is a raceway or piping system that protects wires and cables from impact, moisture, and vapors. It is a path for either power or communication (low voltage) electrical wiring. It is usually tubular and made of metal (galvanized steel, stainless steel, aluminum) or non-metallic materials (plastics) and is either rigid or flexible. Special types of conduits are required for wet areas and hazardous areas.

Hence, the correct option is (D)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 23
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In an interconnected grid system, the diversity factor of the whole system-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 23
Increases diversity factor:- The load curves of different interconnected stations are generally different. The result is that the maximum demand on the system is much reduced as compared to the sum of individual maximum demands of different stations. In other words, the diversity factor of the system is improved, increasing the effective capacity of the system.

Hence, the correct option is (B)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 24
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What happens when the centrifugal starting switch fails to close?
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 24
In normal use, the contact gaps of the switch changed due to arcing and pitting. If the starting switch fails to open when needed, the starting winding will be overheated and will eventually burn out.

Hence, the correct option is (B)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 25
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The secondary winding of which of the following transformers is always kept closed?
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 25
If the current transformer secondary is not shorted when unused and kept open then it can develop a very high voltage across secondary which may damage transformer insulation.

Hence, the correct option is (A)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 26
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If the number of valence electrons of an atom is 4 then the substance is usually?
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 26
The substance is usually a conductor. Good examples of semiconductors are silicon, germanium, selenium which are not even close to group one, two or three.

Hence, the correct option is (A)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 27
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Diversity factor x maximum demand is____
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 27
Hence, the correct option is (B)
AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 28
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Fifth harmonic component of the induced voltage in three-phase AC generator can be eliminated by using a winding pitch to:
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 28
Pitch factor is given by,

KC = cos(nα/2)

Where α is the short pitch angle

nth harmonic component of the induced voltage is eliminated at winding pitch n-1/n

5th harmonic component of the induced voltage is eliminated at winding pitch 5-1/5 = 4/5

Hence, the correct option is (B)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 29
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The advantage of electric braking is-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 29
Electric braking is fast and cheap.

  • In electric braking, there is no maintenance cost like replaced brake shoes periodically.

  • By using electric braking the capacity of the system( like higher speeds, heavy loads) can be increased.

  • A part of energy is returned to the supply consequently the running cost is reduced.

  • In electric braking a negligible amount of heat is generated whereas in mechanical braking enormous heat is produced at brake shoes which leads to failure of brakes.

Hence, the correct option is (C)

AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 30
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The most important cause of power loss in the transmission line is the-
Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 2 - Question 30
Technical losses are normally 22.5%, and directly depend on the network characteristics and the mode of operation.

Hence, the correct option is (B)

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