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SSC JE EE Quiz: Electrical Machine Booster Quiz-11

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Question 1

If we want to step down 160 V to 20 V, what should be the turn ratio?

Question 2

In case of DC series motor the diverter resistance is kept in ____ with series field winding, with increases in the value of director resistor the speed of motor _____.

Question 3

The torque which is defined as the maximum torque at any angular rotor position and rated voltage at any frequency applied which is provided by stator winding is defined as

Question 4

Slip ring and brush are found in?

Question 5

Which of the following functions is carried out by a commutator?

Question 6

Neglecting all losses, how is the developed Torque (T) of D.D separately excited motor operating under constant terminal voltage, related to its out power (P)?

Question 7

In d.c machine for same no. of slots and same current in armature conductor, which one of the following will induced higher e.m.f?

Question 8

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

Question 9

In per unit what is the maximum and minimum voltage regulation of transformer (approximately) respectively

Question 10

Transformer action required at a

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AE & JE Exams

Oct 29AE & JE Exams