Electrical Engineering Questions And Answers :: Dc Motors: part1

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Electrical Engineering : Dc Motors QUESTIONS AND ANSWERS :: part1 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

1.In a D.C. shunt motor, speed is

independent of armature current
directly proportional to the armature current
proportional to the square of the current
inversely proportional to the armature current

2.The type of D.C. motor used for shears and punches is

shunt motor
series motor
differential compoutid D.C. motor
cumulative compound D.C. motor

3.If a D.C. motor is connected across the A.C. supply it will

run at normal speed
not run
run at lower speed
burn due to heat produced in the field winding by .eddy currents

4.In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be

almost negligible
rated full-load current
less than full-load current
more than full-load current

5.Differentially compound D.C. motors can find applications requiring

high starting torque
low starting torque
variable speed
frequent on-off cycles

More Dc Motors QUESTIONS AND ANSWERS available in next pages

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