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

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. winding

b. shaft

c. commutator

d. stator

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

a. circle about the origin.

b. straight line parallel to the speed axis.

c. straight line through the origin.

d. rectangular hyperbola

a. ea = 2 x supply voltage

b. ea = supply voltage

c. supply voltage = 2 x ea

d. supply voltage = 4 x ea

a. circular winding

b. concentric winding

c. progressive winding

d. skein winding

a. low cost to wind

b. low cost to insert

c. permits some freedom of choice of distribution

d. low cost to wind, low cost to insert, permits some freedom of choice of distribution

a. aluminium

b. copper

c. steel

d. wood

a. mechanical operation

b. electrical operation

c. centrifugal operation and mechanical operation

d. centrifugal operation