DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
Which lightning stroke is most dangerous?

Indirect stroke on conductor

Direct stoke on tower top

Direct stroke on ground wire

Direct stroke on line conductor

Indirect stroke on conductor

Direct stoke on tower top

Direct stroke on ground wire

Direct stroke on line conductor

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DGVCL Exam Paper (11-12-2011)
The purpose of providing a choke in a tube light is

To eliminate corona effect

To avoid radio interference

To improve the power factor

To limit the current to an appropriate value

To eliminate corona effect

To avoid radio interference

To improve the power factor

To limit the current to an appropriate value

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DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called

Icons

Points

Spots

Pixels

Icons

Points

Spots

Pixels

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DGVCL Exam Paper (11-12-2011)
The form factor in AC means the ration of

R.M.S. value to average value

R.M.S. value to peak value

Peak value to average value

Peak value to r.m.s value

R.M.S. value to average value

R.M.S. value to peak value

Peak value to average value

Peak value to r.m.s value

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DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Amount of copper in the winding

Harmonics in the generated emf

Size of the machine

Cost of the machine

Amount of copper in the winding

Harmonics in the generated emf

Size of the machine

Cost of the machine

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DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Capacitor start motor

Universal motor

Split phase motor

Capacitor start capacitor run motor

Capacitor start motor

Universal motor

Split phase motor

Capacitor start capacitor run motor

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