SSC JE ELECTRICAL 2018 WITH SOLUTION SET-1 QUIZ

Determine the maximum flux density (in T) of a material having eddy current coefficient of 2, the thickness of 4 mm, the volume of 20 cu.meter, which is supplied by the frequency of 50 Hz when the material has eddy current loss of 6 W

3.34

2.24

1.94

1.21

TRUE ANSWER : ?
YOUR ANSWER : ?

A resistance of 75 Ohms is connected in the shunt of the galvanometer, having an internal resistance of 25 ohms, to convert it into an ammeter. What is the value of current (in A) flowing through the galvanometer, if the total current in the circuit is 5 A?

2.5

3.75

2

3.65

TRUE ANSWER : ?
YOUR ANSWER : ?

In a split-phase Motor

The starting winding is connected through a centrifugal switch

The running winding is connected through a centrifugal switch

Both starting and running windings are connected through the centrifugal switch

The centrifugal switch is used to control the supply voltage

TRUE ANSWER : ?
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Calculate the power factor of an AC circuit having the impedance of 16 Ohms, if a 4 A current flows through it and its average power consumption is 200 W.

0.98

0.78

0.68

0.88

TRUE ANSWER : ?
YOUR ANSWER : ?

Inter Poles winding is connected in

Series with the main pole

Parallel with the main Poles

Series with the armature

Parallel with the Armature

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The speed of the ceiling fan is about

Upto 10000 RPM

Upto 450 RPM

Upto 10 RPM

Upto 200 RPM

TRUE ANSWER : ?
YOUR ANSWER : ?

For Proper Operation of the transistor, its collector should have

Proper Reverse Bias

Very small size

Proper Forward Bias

None of these

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What is the peak-to-peak value of a sinusoidal voltage (in V) having the average value of 100 V?

282.88

314

141.44

159.98

TRUE ANSWER : ?
YOUR ANSWER : ?

The speed of a synchronous motor can be changed by

Changing the load

Changing the supply voltage

Changing the frequency

Changing the supply Terminals

TRUE ANSWER : ?
YOUR ANSWER : ?

Determine the magnetic field strength (in A/m) of a material when the intensity of magnetization of the material is 0.084 Amp/m and the magnetic susceptibility of the material is 0.0012

0.07

70

0.7

700

TRUE ANSWER : ?
YOUR ANSWER : ?