DMRC JE/A.M 2018 Electrical Mini Mock 2 for ESE & GATE EE Exams

Question 1

A 4-pole, 250 W, 115 V, 60 Hz capacitor start induction motor takes a full-load line current of 5. 3 A while running at 1760 r. p. m. The full-load efficiency of the motor is 64%. The motor power factor is

Question 2

What maximum voltage can be connected across a 0.5 W,

resistor without exceeding the rated power dissipation?

Question 3

The time constant of the circuit shown in Fig. when the switch is closed………..
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Question 4

The temperature above which an antiferromagnetic material becomes paramagnetic is called

Question 5

If span length is doubled with no change in other factors, the sag of the line will become

Question 6

An uncharged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential $Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image179.png$ If the common potential after sharing of charges is $Description: Description: E:\Gate\SSC-JE Electrical - Part 1\6_Capacitance-final_files\image180.png$ then dielectric constant of the dielectric is

Question 7

A 10 V range voltmeter is rated for

full-scale current. The total resistance of the voltmeter is

Question 8

When the length of transmission line increases, its inductive reactance (X_L)

Question 9

The electric potential V is given as a function of distance x (metres) by;
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Value of electric field intensity at x = 2 m is

Question 10

A generating plant has a maximum capacity of 100 kW and costs Rs. 1,60,000. The annual fixed charges are 12%. If the load factor is 50%, the fixed charges per kWh will be

Question 11

A 20

200 mV meter movement is used to make a 25 V voltmeter. What is the sensitivity of the meter?

Question 12

The given network will act as an ideal current source with respect to terminals X and Y, if frequency f is

Question 13

What happens when the centrifugal switch in the starting winding of a single-phase induction motor fails to open?

Question 14

The plates of a charged parallel-plate capacitor are pulled apart. Now

Question 15

If the full-scale current of a meter is

then its sensitivity is

Question 16

A circuit breaker is rated as 1500 A, 1000 MVA, 33 kV, 3-second, 3-phase oil circuit breaker, rated making current is

Question 17

An alternating voltage is given by the equation

What are the values of rms voltage frequency and time period?

Question 18

In a series resonance circuit, at resonance, selectivity Q is equal to

Question 19

Fig. shows an ammeter, a voltmeter and a wattmeter connected in the circuit. The wattmeter will read

Question 20

The speed of a d.c. motor is…………………

Question 21

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

Synergy, Sound, Curable, Disease, ?

Question 22

Direction: In a zoo, there are Rabbits and Pigeons. If heads are counted, there are 200 and if legs are counted, there are 580. How many pigeons are there?

Question 23

A person started walking towards west and covered a distance of 15 m, he turned right and walked 10 m. Again he turned right and walked 5 m and in the end he turned left and walked 15 m. which direction is the person facing now?

Question 24

The circumference of a circular playground is 220 m. If there is 7 m wide path around the ground. The area of the path is:

Question 25

What is the value of [1/(1 – tan θ)] – [1/(1 + tan θ)]?

Question 26

In the given figure, ∠AMB = 130° then what is the value (in degrees) of ∠ABQ?

Question 27

Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?

Question 28

Who discovered the colour photography?

Question 29

In the north-west, India shares its land boundaries with which country?

Question 30

The part of the Himalayas lying between Satluj and Kali rivers is known as __________.