Most of the heat generated in I.C. engines is transferred to surrounding medium by
A.Conduction only
B.Convection only
C.Conduction and convection
D.Radiation only
E.None of the above
Category: Mechanical Engineering Mcqs
The critical pressure water is
A.1 atm
B.100 kg/cm2
C.150 kg/cm2
D.Less than 200 kg/cm2
E.More than 200 kg/cm2
The percentage of krypton in atmospheric air is around
A.0.01 ppm
B.0.1 ppm
C.1 ppm
D.10 ppm
Depreciation charges for a machine are thirty paise per working hour. The machine has a scrap value of Rs. 2000 and a working hour average life of 24000 hours. The purchase price of the machine would be
A.Rs. 1800
B.Rs. 7200
C.Rs. 9200
D.Rs. 14275
E.Rs. 17750
Sun radiates energy to the earth
A.in the form of electromagnetic radiation
B.at a relatively constant rate of 3.83 x 1026 W
C.24 hours per day 365 day of the year
D.all of the above
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
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
