SSC JE ELECTRICAL 2018 WITH SOLUTION SET-1 QUIZ

Starting winding of a single-phase motor of a refrigerator is disconnected from the circuit by means of a

Centrifugal Switch

None of these

Magnetic Relay

Thermal Relay

TRUE ANSWER : ?
YOUR ANSWER : ?

Determine the percentage voltage error of a potential transformer with the system voltage of 11000 V and having a turn’s ratio of 104 if the measured secondary voltage is 98 V

7.92

8.84

5.75

6.25

TRUE ANSWER : ?
YOUR ANSWER : ?

In a synchronous motor running with the fixed excitation, when the load is increased two times, its torque angle becomes approximately

Four Times

No Change

Twice

Half

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following statement is NOT true about PMMC type instruments?

Stray magnetic errors are small in these types of instruments

The cost of PMMC instruments is high

These instruments are suitable for both AC and DC currents

PMMC type Instruments have uniformly divided scale

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the material is used to fix the screw on concrete wall and ceiling?

Link clips

Bushings

Saddles

Rawl Plug

TRUE ANSWER : ?
YOUR ANSWER : ?

Determine the value of produced mmf (in Amp-turns) in a coil if the coil has a 120 turns carrying a current of 0.1 A

18

12

14

16

TRUE ANSWER : ?
YOUR ANSWER : ?

The welding electric circuit is______

Through cables Only

Always Earthed

None of these

Never Earthed

TRUE ANSWER : ?
YOUR ANSWER : ?

For a dc machine shunt resistance and armature resistance values are

High and High

High and Low

Low and High

Low and Low

TRUE ANSWER : ?
YOUR ANSWER : ?

In the synchronous motor, damper winding is placed at

Rotor

Stator

Yoke

Both Stator and Rotor

TRUE ANSWER : ?
YOUR ANSWER : ?

Under the no-load condition, the current in a transmission line is due to

Spinning Reserve

Back Low from the earth

The capacitance of the line

Corona effect

TRUE ANSWER : ?
YOUR ANSWER : ?