Mechanical Engineering Mcqs
Q.1: Atmospheric pressure is equal to____________?-
A. 1.013 bar
B. 760mm of Hg
C. 101.3KN/m2
D. All of these
Q.2: Which of the following variables controls the physical properties of a perfect gas_________________?d
A. pressure
B. temperature
C. volume
D. all of the above
Q.3: The unit of time in S.I. units is__________________?4
A. second
B. minute
C. hour
D. day
Q.4: Which of the following laws is applicable for the behavior of a perfect gas__________________?^
A. Boyles law
B. Charleslaw
C. Gay-Lussac law
D. all of the above
Q.5: The unit of temperature in S.I. units is _________________?;
A. Centigrade
B. Celsius
C. Fahrenheit
D. Kelvin
Q.6: The unit of length in S.I. units is________________?4
A. meter
B. centimeter
C. kilometer
D. millimeter
Q.7: According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?z
A. temperature
B. absolute
C. absolute temperature, if volume is kept constant0
D. volume, if temperature is kept constant'
Q.8: General gas equation is____________________?,
A. PV=nRT
B. PV=mRT
C. PV = C
D. PV=KiRT
Q.9: Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?
A. 02, N2, steam, C02
B. Oz, N2, water vapour
C. S02, NH3, C02, moisture
D. 02, N2, H2, air
Q.10: A closed system is one in which_________________________?9
A. mass does not cross boundaries of the system, though energy may do soE
B. mass crosses the boundary but not the energy,
C. neither mass nor energy crosses the boundaries of the system<
D. both energy and mass cross the boundaries of the system7

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