Top 150+ Solved DC Motor MCQ Questions Answer
Q. One D.C. motor drives another D.C. motor. The second D.C. motor when excited anddriven
a. runs as a generator
b. does not run as a generator
c. also runs as a motor comes to stop after sometime
d. none
Q. Which of the following tests will be suitable for testing two similar D.C. series motors oflarge capacity ?
a. Swinburne'stest
b. Hopkinson'stest
c. Field test
d. Brake test
Q. Where D.C. motor of H.P. 12 or more requires frequent starting, stopping,reversingand speed control
a. drum type controller is used
b. three point starter is used
c. four point starter is used
d. all above can be used
Q. If a D.C. shunt motor is working at full load and if shunt field circuit suddenlyopens
a. this will make armature to take heavy current, possibly burning it
b. this will result in excessive speed, possibly destroying armature due toexcessive centrifugal stresses
c. nothing will happen to motor
d. motor will come to stop
Q. D.C. motor is to drive a load which has certain minimum value for most of thetime and some peak value for short duration. We will select the
a. series motor
b. shunt motor
c. compound motor
d. any of the above