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.Management Sciences
Category: Mechanical Engineering Mcqs
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?
A. 50 : 20 : 20 : 10
B. 40 : 30 : 20 : 10
C. 50 : 20 : 10 : 20
D. 30 : 20 : 30 : 20
E. 50 : 10 : 20 : 20
The crystal structure of gamma iron is_________________?
A. body centred cubic
B. face centred cubic
C. hexagonal close packed
D. cubic structure
E. orthorhombic crystal
The disadvantage of product layout is_________________?
A. high initial investment for the specialized facilities
B. skilled labour to operate machines
C. production time is longer, requiring more goods in inventory
D. high cost of inspection
E. costly and complex production control
For speed above 3000 km/hour, it is more advantageous to use____________________?
A. turbo-jet engine
B. ram-jet engine
C. propellers
D. rockets
E. hydraulic jet propulsion
The pressure at the end of compression in the case of diesel engine is of the order of___________________?
A. 6 kg/cm
B. 12kg/cmz
C. 20 kg/cmz
D. 27.5 kg/cmz
E. 35 kg/cm
The number of electrons in 1 cm3 of metal would be of the order of_______________?
A. 1010
B. TO16
C. 1022
D. 1040
E. 1052
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m3/mt ?
A. 3 m3/mt
B. 1.5 m3/mt
C. 18 m3/mt
D. 6 m3/mt
E. 0.75 m3/mt
In the aircraft propellers __________________?
A. the propulsive matter is caused to flow around the propelled body
B. propulsive matter is ejected from within the propelled body
C. its functioning does not depend on presence of air
D. all of the above
E. none of the above
For an irreversible gas turbine cycle, the efficiency and work ratio both depend on___________________?
A. pressure ratio alone
B. maximum cycle temperature alone
C. minimum cycle temperature alone
D. both pressure ratio and maximum cycle temperature
E. none of the above
The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as__________________?
A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow
E. streamline flow
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