Related Questions

Which of the following types of reactors is the safest from operation point of view?
A A vapor phase reactor
B Pot type reactor
C A liquid phase reactor
D A liquid phase catalytic reactor
__________ closure is the weakest enclosure for cylindrical vessels.
A Hemispherical
B Torispherical
C Conical or flat plate
D Elliptical
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
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
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
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
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
For which of the following applications a D.C. motor is preferred over an A.C. motor?
A Low speed operation
B High speed operation
C Variable speed operation
D Fixed speed operation
If a D.C. motor is to be selected for conveyors, which motor would be preferred ?
A Series motor
B Shunt motor
C Differentially compound motor
D Cumulative compound motor

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