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SSC JE 2019-20 Technical Quiz 15

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Question 1

A d.c. shunt motor takes a total current of and runs at 800 r.p.m. Resistance of shunt field is and that of armature The iron and friction losses amount to What is the lost torque?

Question 2

Which of the following has the highest value of thermal conductivity?

Question 3

A 240 V series motor takes when giving its rated output at Its resistance is , what resistance must be added to obtain rated torque at

Question 4

A circuit having power factor of 0.8 consumes 40 W. What will be the value of reactive power (in VAR) of the circuit?

Question 5

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

Question 6

The input current to a 3-phase step down transformer connected to an supply system is Calculate the secondary line voltage for star-star connection if the phase turns ratio is 44.

Question 7

What will be the current (in A) through a solenoid, when the solenoid has 160 turns and produces an mmf of 32 Amp-turns?

Question 8

The curie temperature of iron is

Question 9

The sweep of celling fan is indicated by

Question 10

Which of the following is not an indoor lighting?
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Mar 18ESE & GATE EE