Top 150+ Solved Electrical Drives and Controls (EDC) MCQ Questions Answer

a. wrim

b. scim

c. belt slip ring im

d. dc shunt motor

a. n (ka2/rb)

b. n2 (ka2/rb)

c. n-1 (ka2/rb)

d. (ka2/rb)

a. speed increases

b. speed decreases

c. independent of speed

d. depends on supply voltage

a. motor will come to rest as a result of plugging

b. motor will come to rest and will start rotating in another direction

c. motor will burn

d. nothing will happen

a. small motors only

b. small and medium powered

c. only in large heavy machines

d. everywhere

a. reversal of field connections

b. reversal of armature connections

c. addition of equal and opposite field

d. removal of armature circuit from current machine circuit

a. system inertia

b. load torque

c. motor rating

d. all- system inertia, load torque and motor rating

a. freely running machine

b. motor with slow speed

c. generator

d. motor with same speed in opposite direction

a. plugging

b. dynamic braking

c. regenerative braking

d. in all electrical braking

a. will run at normal speed

b. will not run

c. will run at lower speed

d. burn due to heat produced in the field winding

a. the motor will stop

b. the motor will continue to run

c. the armature may burn

d. the motor will run noisy

a. back emf increase but line current falls.

b. back emf falls and line current increase.

c. both back emf as well as line current increase.

d. both back emf as well as line current fall.

a. field winding

b. commutator

c. slip rings

d. armature winding

a. faraday’s law

b. lenz’s law

c. coulomb’s law

d. fleming’s left-hand rule

a. gross power

b. power drawn in kva

c. power drawn in kw

d. output power available at the shaft