A choke is applied in a car
A.For increasing speed
B.For fuel economy
C.For starting in cold weather
D.For starting in hot weather
E.For reduction of speed
Category: Engineeeing Mcqs
Eulers dimensionless number relates
A.Pressure force and inertia force
B.Inertia force and gravity force
C.Buoyant force and inertia force
D.Buoyant force and viscous force
E.Viscous force and inertia force
The advantage of a pneumatically operated control system is
A.It can be used in hazardous atmosphere
B.Simplicity of components
C.Easily maintained
D.Relatively inexpensive
E.All of the above
The disadvantage of product layout is
A.High initial investment is required for the specialized facilities
B.Skill labour is required to operate general purpose machinery
C.Production time is longer, requiring more goos in prices
D.Cost of inspection is very high
E.Production control is complex and costly
The strength of the sand is high if grains are
A.round and small
B.sharp and irregular in shape
C.large and regular in shape
D.none of the above
During heat treatment quenching cracks occur due to
A.irregular martensitic transformation within the article
B.oxidising atmosphere within the fumace
C.heating at higher temperatures for longer durations
D.All of the above
In a nozzle under choked flow conditions pressure waves travel, in the divergent portion, at
A.subsonic speed
B.sonic speed
C.supersonic speed
D.subsonic to supersonic speed
Air fuel ratio for a jet engine is of the order of
A.10 ; 1
B.15 ; 1
C.20 ; 1
D.60 ; 1
E.400 ; 1
The function of desuperheating coil in a condenser is
A.To remove heat from condenser
B.To improve performance of a condenser
C.To discharge the heat exchanged in condenser to the surroundings
D.To remove the heat of superheat of the refrigerant before it enters the condenser
E.None of the above
A fan is being used under certain known conditions. If the speed of fan is doubled the air displaced by the fan
A.Will remain the same
B.Will be doubled
C.Will be four times the original displacement
D.will be either times the original displacement
E.None of the above
