Practice MCQ Questions and answers on DC Generators Mcqs

A. is amenable to better voltage control

B. is more stable

C. has exciting current independent of load current

D. has all above features

A. all the four poles are north poles

B. alternate poles are north and south

C. all the four poles are south poles

D. two north poles follow two south poles

A. double the number of poles

B. same as the number of poles

C. half the number of poles

D. two

A. ball bearings

B. bush bearings

C. magnetic bearmgs

D. needle bearings

A. severe sparking

B. rough commutator surface

C. imperfect contact

D. any of the above

A. Lap winding

B. Wave winding

C. Either of A. and B. above

D. Depends on other features of design

A. where low voltage and high currents are involved

B. where high voltage and small cur-rents are involved

C. in both of the above cases

D. in none of the above cases

A. current

B. voltage

C. speed

D. none of above

A. magnetic flux, direction of current flow and resultant force

B. magnetic flux, direction of motion and the direction of e.m.f. induced

C. magnetic field strength, induced voltage and current

D. magnetic flux, direction of force and direction of motion of conductor

A. rivets

B. counter sunk screws

C. brazing

D. welding