The speed of the engine is increased or decreased by operating
A.Throttle valve
B.Choke valve
C.Steering
D.Clutch
E.Any of the above
Category: Mechanical Engineering Mcqs
The allotropic form of iron not having body centred cubic lattice is
A.Alpha iron
B.Beta iron
C.Gamma iron
D.Delta iron
E.All of the above
If a discharge pressure of a refrigeration compressor is too high, it shows there is (are)
A.Too little or too warm condenser water
B.Fouled tubes in shell and tube condenser
C.Improper operations of evaporator condenser
D.Overcharge of refrigerant
E.Any of the above
The disadvantage of stratified charge engine is
A.reduced power for a given engine size
B.higher weight for bhp
C.poor reliability
D.All of the above
Rank of coal is based on
A.Fixed carbon and heating value
B.Ash content
C.Ash and moisture content
D.Size
E.None of the above
Identify incorrect statement regarding the flywheel, if any
A.It is provided to minimise vibration of engine
B.It is provided to control engine speed
C.It takes care of output fluctuations and controls input accordingly
D.In help in starting engine
E.All above
The coefficient of performance is defined as
A.the ratio of useful refrigeration to the net work
B.the ratio of net work to the useful refrigeration
C.the drop in temperature achieved
D.the drop in pressure achieved
For for measurement of temperature in cryogenic range the thermometers used are
A.Pyrometers
B.Radiation pyrometers
C.Mercury thermometers
D.Gas thermometers
E.Electronic digital instruments
A prssure gauge on the discharge side of compressor
A.Indicates the temperature of refrigerant after compression
B.Gives an ideas about the coefficient of performance of the cycle
C.Gives a warning when the pressure reaches a dangerous point
D.Confirms the flow of refrigerant in cycle
E.Is mounted for show only
Which of the following automobile will provide least pollution problems
A.Diesel engine powered
B.Petrol engine powered
C.Gas turbine powered
D.Wankel engine powered
E.Battery powered
