Which reciprocating compressor is usually used in domestic refrigerators?
A.Open type
B.Semi-sealed type
C.Hermetically sealed type
D.Any of the above
E.None of the above
Category: Mechanical Engineering Mcqs
A reversible process requires that
A.there be no viscous or friction in the system
B.heat transfer occurs from system to surroundings only
C.pressure of the system and surroundings be equal
D.temperature of the system and surroundings be equal
Which one of the following is not a part of the hydraulic braking system?
A.Master cylinder
B.Wheel cylinder
C.Brake pedal
D.Steering mechanism
E.Brade shope
Deposit of carbon in the exhaust system
A.Will increase back pressure
B.Will reduce back pressure
C.Will have no effect on back pressure
D.Will result in black smoke
E.Will increase noise level
In case of sunk key
A.The key way is cut in shaft only
B.The key way is cut in bub only
C.The key way is cut in both shaft and hub
D.The key way is helical along the shaft
E.The key is in two parts
Which of the following angles is aero at solar noon?
A.Solar altitude angle
B.Solar zenith angle
C.Hour angle
D.Latitude angle
A cooling tower in a refrigeration system
A.Removes heat from refrigerant
B.Removes heat from brine
C.Removes heat from lubricating oil
D.Removes heat from hot water coming out of condenser
E.None of the above
The perfect heat engine works on the Carnot cycle between 1000?C and 200?C. The efficiency of the engine will be
A.80%
B.60%
C.62.80%
D.37.20%
E.68.20%
Negative slack occurs when
A.dummy activities do not exist
B.dummy activities are large in number
C.events stick to their schedule
D.deficiency of resources occurs
A V-belt designated as C 120 will have
A.120 mm as the dia of small pulley
B.120 cm as the length of belt
C.120 inch as the length of belt
D.120 cm as the centre distance between pulleys
E.None of the above
