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.Management Sciences
Category: Mechanical Engineering Mcqs
Alkaline pyrogallate is used in Orsat’s apparatus for absorption of _________________?
A. C02
B. CO
C. 02
D. N2
E. none of the above
A supercritical boiler is one that operates above the pressure and temperature of following values_____________________?
A. 100 kg/cm2 and 540°C
B. 1 kg/cm2 and 100°C
C. 218 kg/cm2 abs and 373°C
D. 218 kg/cm2 abs and 540°C
E. 100 kg/cm2 abs and 373°C
Basic constituents of Monel metal are _________________?
A. nickel, copper
B. nickel, molybdenum
C. zinc, tin, lead
D. nickel, lead and tin
E. none of the above
Whitworth quick return mechanism is obtained by inversion of___________________?
A. slider crank mechanism
B. kinematic chain
C. five link mechanism
D. roller cam mechanism
E. none of the above
The ignition coil in diesel engines produces voltage of the order of________________?
A. 6 to 12 volts
B. 240 volts
C. 1000 volts
D. 20,000 volts
E. 80,000 volts
Air vessels in reciprocating pump are used to__________________?
A. smoothen flow
B. reduce acceleration to minimum
C. increase pump efficiency
D. save pump from cavitation
E. increase pump head
At low temperatures (say 75°C) the notched-bar impact value of steel____________________?
A. increases markedly
B. decreases markedly
C. remains same
D. depends on heat treatment carried out
E. none of the above
Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy
Which of the following is not the unit of pressure ?
A. kg/cm
B. ata
C. atmosphere
D. mm of wcl
E. newton
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value ___________________?
A. (1- moisture content)
B. (1 + moisture content)
C. 1 + moisture content
D. 1 – moisture content
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