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271.

If the power factor of an electrical system is unity, it means

A.	Entire power pulls the load	B.	Entire power is consumed in reactive power
C.	Magnetism generated within the equipment is negligible	D.	Equipment is running properly
E.	Efficiency is least

272.

An exciter is a

A.	D.C. motor	B.	D.C.generator
C.	A.C.generator	D.	Synchronous motor
E.	None of the above

273.

Corona is generally accompanied by a faint glow and

A.	Hissing noise	B.	Spark
C.	Heating of conductors	D.	Explosion
E.	Sparking

274.

Advantage of a diesel engine over petrol engine is

A.	Low fuel consumption at full load as well as part load	B.	Smooth operation at all speeds
C.	Low compression ratio	D.	No detonation problems
E.	All of the above

275.

A diesel power plant is best suited as

A.	Base load plant	B.	Stand by plant
C.	Peak load plant	D.	General purpose plant
E.	None of the above

276.

In wet dry lubrication of diesel engines

A.	Oil is splashed	B.	Oil is splashed and pumped to various points
C.	Oil is pumped to various points	D.	All of the above
E.	None of the above

277.

A gas turbine cycle with regenerator has a thermal efficiency of 26%. If intercooler and reheater are also introduced what could be expected thermal efficiency

A.	60%	B.	50%
C.	40%	D.	30%
E.	10%

278.

A gas turbine power plant suits as

A.	Peak load plant	B.	Casual run plant
C.	Base load plant	D.	All of the above
E.	None of the above

279.

All but one of the following possible steam generator test difficulties would cause the apparent performance to be poorer than it actually is. One item would make the performance look better than it really is. Identify the item

A.	Steam flow meter reads low	B.	Steam temperature gauge reads too high
C.	HHV of fuel is determined incorrectly, being too high	D.	Coad scales are inaccurate, reading high

280.

A hydrograph is a plot of discharge through a river versus

A.	Time	B.	Velocity of water
C.	Rate of flow of water	D.	None of the above