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DC Motors

DC Motors
The maximum end play of a motor is about

0.4 mm
10 mm
6 mm
2 mm

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DC Motors
Which of the following application requires high starting torque?

Lathe machine
Air blower
Locomotive
Centrifugal pump

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DC Motors
D.C. generators are normally designed for maximum efficiency around

All of these
Rated r.p.m.
Full load
Rated voltage

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DC Motors
A dc series motor is most suitable for

Cranes
Pump
Punch presses
Lathes

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DC Motors
The starting resistance of a DC motor is generally

Around 500 Ω
1000 Ω
Low
Infinitely large

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DC Motors
At the instant of starting when a D.C. motor is put on supply, it behaves like

A low resistance circuit
None of these
A highly resistive circuit
A capacitive circuit

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