Electrical Online Practice Set 3

    Inverse time current relay are use for protection of -

    Correct! Wrong!

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

    Correct! Wrong!

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

    Correct! Wrong!

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

    Correct! Wrong!

    In an NPN transistor P-region is called

    Correct! Wrong!

    Current versus time graph for an ideal commutation is a

    Correct! Wrong!

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

    Correct! Wrong!

    The DC generator has poorest V.R is

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

    The DC motor speed can be controlled by changing

    Correct! Wrong!

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

    Correct! Wrong!

    A DC generator beyond critical field resistance will generated-

    Correct! Wrong!

    If spacing between conductor increase the corona effect -

    Correct! Wrong!

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

    Correct! Wrong!

    The transformer that does not provide electric isolation is

    Correct! Wrong!

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

    Correct! Wrong!

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