Related Questions

Centrifugal compressors compared to reciprocating compressors
A Require less space
B Have quieter operation
C Have lower operating costs
D All of the above
Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be
A Level compounded
B Under compounded
C Cumulatively compounded
D Differentially compounded
Rotary compressors are used for delivering
A Small quantities of air at high pressures
B Large quantities of air at high pressures
C Small quantities of air at low pressures
D Large quantities of air at low pressures
Multistage compressors are used in industry, because they
A Reduce the cost of compressor
B Reduce the size requirement
C Resemble closely to isothermal compression
D Are easy to control
Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. How many of the households in the area have neither cares nor motor bikes?
A 110
B 90
C 50
D 30
A motor pool has 300 vehicles of which 30% are trucks. 20% of all the vehicles in the motor pool are diesel, including 15 trucks. What percent of the motor pool is composed of vehicles that are neither trucks nor diesel?
A 165%
B 90%
C 65%
D 10%
By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
A Frame
B Shaft
C Commutator
D Stator
One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven
A Runs as a generator
B Does not run as a generator
C Also runs as a motor comes to stop after sometime
D None of these
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
A remain same
B go down
C improve
D none of the above
Rotary compressors are suitable for
A Large discharge at high pressure
B Low discharge at high pressure
C Large discharge at low pressure
D Low discharge at low pressure

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