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AIIMS CRE Electrical JE/AE Mock Test- 6 - 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- 6

AIIMS CRE Electrical JE/AE Mock Test- 6 for NEET 2025 is part of AIIMS CRE Group B & C Mock Test Series preparation. The AIIMS CRE Electrical JE/AE Mock Test- 6 questions and answers have been prepared according to the NEET exam syllabus.The AIIMS CRE Electrical JE/AE Mock Test- 6 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- 6 below.
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AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 1

Heavy metals got their names because compared to other atoms, they have

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 1
  • Heavy metals got their names because compared to other atoms, they have higher densities.

  • Examples of heavy metals include gallium, thallium, and hafnium.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 2

The existence of isotopes was first suggested in 1913 by the radiochemist ______.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 2
The existence of isotopes was first suggested in 1913 by the radiochemist Frederick Soddy, based on studies of radioactive decay chains that indicated about 40 different species referred to as radioelements (i.e., radioactive elements) between uranium and lead, although the periodic table only allowed for 11 elements between lead and uranium inclusive.

Hence, the correct option is (a)

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 3

Find the odd word/number/letters/number pair from the given alternatives.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 3
All but 64 can be divided by 5.
AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 4

Fill in the blanks with suitable letters.

a _ c _ ba _ ca _ cb

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 4
a a c b b a c c a c c b
AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 5

Average of the runs of 133 players of a team is 38. If the average of the runs of the male players is 43 and the average of the runs of the female players is 24, then what will be the ratio of the total runs of male players and the total runs of female players respectively?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 5

M:F=14:10=14:5

No. of males

=(14/19)×133=98

Total runs of males

=98×43

No. of females

=133−98=35

Total runs of females

=35×24

Required ratio = (98 x 43)/(35 x 24) = 301/60

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 6

There are two taps P and Q that can fill a tank in 12 and 24 minutes respectively. Both of them are opened together and after 4 minutes Q is closed. How long more it take for P alone to fill the tank?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 6
Part of the tank filled in 1 minute by tank P=1/12 Part of the tank filled in 1 minute by tan⁡kQ=1/24 Part of the tank filled by P and Q in 4 minutes

Equating Time and part filled, =1/12×2/1=(1/x) x=6 minutes

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 7

A  230/2300 transformer takes no-load current of 6.5 A  and absorbs 187 W. If the resistance of the primary is 0.06 what is the active component of current?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 7


Active Power = VoIoCos Φo = 187 W
187 = 230 x 6.5xcos ( Φo)
cos ( Φo) = 0.125
Φo = Cos-1(0.125)
Φo = 7.18o
Active Component Iw = Iox cos( Φo)
= 6.5 x 0.125 = 0.8125

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 8

In a balanced 3-phase circuit, the line current is 12 A. When the power is measured by two wattmeter method, one meter reads 11 kW while the other reads zero. Power factor of the load is

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 8

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 9

What happens to the conductivity of semi-conductors when temperature increases?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 9

The electrical conductivity of a semiconductor increases with increase in temperature because with increase in temperature the electrons overcome the energy barrier between the valence band and the conduction band easily.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 10

Superposition theorem can be applied only to-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 10

Linear bilateral network

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 11

When a steady current is passed through a ballistic galvanometer, then the deflection will be

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 11

As long as charge passes through the meter, there is no significant deflection of the moving system. The moving system deflects only after the charge has completely passed through the meter.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 12

In a power plant, if the maximum demand on the plant is equal to the plant capacity, then-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 12
Reserve capacity (RC = PC - Pmax)

(PC = Pmax)

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 13

The determinant of the matrix is:-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 13
Hence, the correct option is (C)
AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 14

The elements which are not capable of delivering energy by its own are known as _____

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 14
Hence, the correct option is (C)
AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 15

The voltage phaser of a circuit is 10∠15°V and the current phasor is 2∠−45° A. The active and reactive powers in the circuit are

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 15

Hence, the correct option is (a).

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 16

The insulation resistance of a cable of length 10 km is 1MΩ. For a length of 100 km of same cable, the insulation resistance will be-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 16
The insulation resistance of a wire is inversely dependent on the length of the wire. This simply means that if length increases then insulation resistance decreases and vice versa.

Initial cable length =10 km

New cable length =100 km

We can see that length changes to ten times of itself. This implies that insulation resistance reduces to its one tenth as both are inversely related.

New insulation resistance =1 MΩ/10

=0.1 MΩ

Hence, the correct option is (C).

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 17

A network has 4 nodes and 3 independent loops. What is the number of branches in the network?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 17
Hence, the correct option is (B)
AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 18

The path of the magnetic flux in a transformer has-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 18
The magnetic path length (MPL) is analogous to the length of a conductor for electrical current - increasing the MPL will increase its reluctance (magnetic 'resistance'). For a given magneto-motive force (MMF) in ampere-turns, the flux produced will depend upon the value of reluctance in ampere-turns per Weber and so an increase in reluctance will produce a decrease in flux. (See Hopkinson's Law) Permeability is analogous to 'conductivity' and depends upon the material as well as the path length and cross-sectional area. Increasing reluctance will decrease permeability.

Hence, the correct option is (D)

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 19

The resistance of the field regulator of a DC shunt motor is of order of

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 19
In DC shunt motors, Field Resistance is kept high so as to flow minimum amount of current through it and thus maximum amount of current through armature for the rated voltage supply and current.

Hence, the correct option is (D)

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 20

The Slip of an induction motor under full load condition is about-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 20

Hence, the correct option is (B)

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 21

The voltage across the open circuit is?

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 21

The voltage across all branches in a parallel circuit is the same as that of the source voltage. 
So, the voltage across the 10-ohm resistor and the open circuit is the same=100V.
Hence, the correct option is (A).

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 22

Orifice plates have_____.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 22

The discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to deliberately reduce pressure, restrict flow or to measure flow rate. Typical value of discharge coefficient of orifice plate is 0.61.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 23

Tappings of a transformer are provided

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 23

Tappings are provided to regulate voltage as per need in the secondary side.
Since in HV side, current is low & have more number of turns so tappings are provided in HV side to prevent sparks & for smooth voltage regulation. It is positioned at the middle to eliminate axial forces.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 24

The Req for the circuit shown in figure is-

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 24

 

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 25

A 1 – phase energy meter does 100 revolution in 90 seconds. Meter constant for instrument is 1200 rev./KWh, then power consumed by load is –

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 25

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 26

A 220 V DC motor has an armature resistance of 0.8 Ω. Find the induced emf when the motor has a full load armature current of 40 A.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 26

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 27

The Superposition Theorem is applicable to __________.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 27

The superposition theorem states that in any linear bilateral network that consisting of two or more independent sources, current through (or voltage across) an element is the algebraic sum of the currents through (voltages across) that element caused by each independent source acting alone with all other sources are replaced by their internal resistances.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 28

A 200/400 V, 20 kVA, 50 Hz single-phase transformer has, at full-load, a copper loss of 120 W. If it has an efficiency of 98% at full-load, determine the iron losses.

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 28

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 29

The Norton resistance at terminals A and B in the circuit shown in Figure is

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 29

In order to find Norton resistance RN, open circuit the terminals A and B and replace the current source by an open. Then resistance at open-circuited terminals A and B is RN.

AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 30

Using Millman's theorem, find the current through the load resistance of resistance shown below

Detailed Solution for AIIMS CRE Electrical JE/AE Mock Test- 6 - Question 30

Using Milliman's theorem

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