If the back emf in the DC motor suddenly disappears, the motor will

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Current versus time graph for an ideal commutation is a

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A DC generator beyond critical field resistance will generated-

Correct! Wrong!

The running speed of a DC series motor is basically determined by -

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Inverse time current relay are use for protection of -

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If spacing between conductor increase the corona effect -

Correct! Wrong!

The annual deposit in the sinking fund method compared to the straight line method is

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The transformer that does not provide electric isolation is

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The DC generator has poorest V.R is

V.R=Voltage Regulation
Show hint
Correct! Wrong!

Main A.C. power is converted into D.C. power for _______ .

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In an NPN transistor P-region is called

Correct! Wrong!

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

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Which of these won't prevent a self- excited shunt generator from building its full voltage?

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A DC motor runs at full load at 1725 rpm and without load at 1775 rpm. The regulation of speed is

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The DC motor speed can be controlled by changing

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