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SSC JE EE Score Booster Quiz 8

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Question 1

Interpole winding is connected in

Question 2

In a d.c. machine, the armature mmf is

Question 3

A dc shunt generator has a speed of 800 rpm when delivering 20 A to the load at the terminal voltage of 220V. If the same machine is run as a motor it takes a line current of 20A from 220V supply. The speed of the machine as a motor will be

Question 4

A 10-pole d.c. machine has a lap-wound armature. It has 600 conductors, each of resistance 0.05 Ohm. What is the armature resistance?

Question 5

An 8-pole duplex lap winding will have ……………..parallel paths.

Question 6

A 4-pole d.c. shunt generator with a wave-wound armature having 390 conductors has to supply a load of 500 lamps each of Description: Description: E:\Gate\SSC-JE Electrical - Part 1\17_DC-Generators-final-2_files\image233.png Allowing Description: Description: E:\Gate\SSC-JE Electrical - Part 1\17_DC-Generators-final-2_files\image234.png for the voltage drop in the connecting leads between the generator and the load and a contact drop of Description: Description: E:\Gate\SSC-JE Electrical - Part 1\17_DC-Generators-final-2_files\image235.png per brush, what is the generated e.m.f.? The flux/pole Description: Description: E:\Gate\SSC-JE Electrical - Part 1\17_DC-Generators-final-2_files\image236.png and Description: Description: E:\Gate\SSC-JE Electrical - Part 1\17_DC-Generators-final-2_files\image237.png

Question 7

The commutator in a d.c. machine can convert

Question 8

In a shunt would d.c. machine (generator or motor), the shunt field winding consists of

Question 9

Fig. shows the d.c. shunt motor on no-load. The quantity Description: E:\Gate\SSC-JE Electrical - Part 4-Done\All_Questions_new_files\image001.pngrepresents ………………………
Description: E:\Gate\SSC-JE Electrical - Part 4-Done\All_Questions_new_files\image002.png

Question 10

A series motor will over speed when ………………..
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Mar 23ESE & GATE EE