Mechanical Engineering MCQs

A. 9.81 joules
B. All joules
C. 427 joules
D. 102 joules

A. Pulverising coal in inert atmosphere
B. Heating wood in a limited supply of air at temperatures below 300gc
C. Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D. Binding the pulverised coal into brick-etts

A. 225.65 kgf/cm2
B. 273 kgf/cm2
C. 100 kgf/cm2
D. 1 kgf/cm2

A. Linearly
B. Rapidly first and then slowly
C. Slowly first and then rapidly
D. Inversely

A. Melting point rises slightly and boiling point drops markedly
B. Melting point rises markedly and boiling point drops markedly
C. Melting point drops slightly and boiling point drops markedly
D. Melting point drops slightly and boiling point drops slightly

A. Constant volume
B. Constant temperature
C. Constant pressure
D. Constant entropy

A. 0.1 to 0.2 kg
B. 0.2 to 0.4 kg
C. 0.6 to 0.8 kg
D. 1.0 to 1.5 kg

A. Air present in atmosphere at ntp conditions
B. Air required for complete combustion of fuel with no excess air
C. Air required for optimum combustion so as to have reasonable excess air
D. Air required to convert co into c02

A. Linearly
B. Slowly first and then rapidly
C. Rapidly first and then slowly
D. Inversely

A. Ps-pa
B. Pa-ps
C. Pa+p
D. Non of these