DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
Which motor is used to start heavy loads?

Differentially compounded motor

Cumulatively compounded motor

Series motor

Shunt motor

Differentially compounded motor

Cumulatively compounded motor

Series motor

Shunt motor

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DGVCL Exam Paper (11-12-2011)
Bulk power transmission over long HVDC lines are preferred on account of

Low cost of HVDC terminals

No harmonic problems

Minimum line power losses

Simple protection

Low cost of HVDC terminals

No harmonic problems

Minimum line power losses

Simple protection

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DGVCL Exam Paper (11-12-2011)
If a 5 A fuse is blown frequently in a house lighting circuit, it is required to

Insert a fuse of higher voltage rating

Insert a fuse of higher current rating

Reduce the load

Check the load

Insert a fuse of higher voltage rating

Insert a fuse of higher current rating

Reduce the load

Check the load

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DGVCL Exam Paper (11-12-2011)
In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

Reluctance motor

Universal motor

Synchronous motor

Induction motor

Reluctance motor

Universal motor

Synchronous motor

Induction motor

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DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

Under reach

Reach

Pick up

Over reach

Under reach

Reach

Pick up

Over reach

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DGVCL Exam Paper (11-12-2011)
Distribution transformers have good all day efficiency due to

Low voltage

Low copper loss

Low copper as well as iron loss

Low iron loss

Low voltage

Low copper loss

Low copper as well as iron loss

Low iron loss

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