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.Management Sciences
Category: D.C. Generators
D.C. series generator is used_________________?
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A. to supply traction load
B. to supply industrial load at constant voltage
C. voltage at the toad end of the feeder
D. for none of the above purpose
D.C. generator generally preferred for charging automobile batteries is______________?
A. series generator
B. shunt generator
C. long shunt compound generator
D. any of’the above
The number of brushes in a commutator depends on______________?
A. speed of armature
B. type of winding
C. voltage
D. amount of current to be collected
Number of tappings for each equalizer ring is equal to_____________?
A. number of pole pairs
B. number of poles
C. number of parallel paths
D. number of commutator segments
The bearings used to support the rotor shafts are generally______________?
A. ball bearings
B. bush bearings
C. magnetic bearmgs
D. needle bearings
Which of the following generating machine will offer constant voltage on all loads?
A. Self-excited generator
B. Separately excited generator
C. Level compounded generator
D. All of the above
For a D.C. generator when the number of poles and the number of armature conductors is fixed, then which winding will give the higher e.m.f___________ ?
A. Lap winding
B. Wave winding
C. Either of A. and B. above
D. Depends on other features of design
The critical resistance of the D.C. generator is the resistance of_____________?
A. field
B. brushes
C. armature
D. load
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