Mechanical Engineering MCQs

A. Peak pressure
B. Rate of rise of pressure
C. Rate of rise of temperature
D. Peak temperature

A. Diesel cycle
B. Otto cycle
C. Dual combustion cycle
D. Special type of air cycle

A. Air aione
B. Air and fuel
C. Air and lub oil
D. Fuel alone

A. Fuelinjection starts at 10° before to dead center and ends at 20° after tor dead center
B. Fuel injection starts at top dead center and ends at 20° after top dead center
C. Fuel injection starts at just before top dead center and ends just after top deac center
D. May start and end anywhere

A. 250°c
B. 500°c
C. 1000°c
D. 150cpc

A. Increase linearly
B. Decrease linearly
C. Increase parabolically
D. Decrease parabolically

A. Calorific value of oil
B. Low heat value of
C. High heat value of oil
D. Mean heat value of oil

A. The friction is high
B. The friction is unpredictable
C. The small difference in cooling water temperature or in internal friction has a disproportionate effect
D. The engine is rarely operated

A. 2-stroke cycle engines
B. 4-stroke cycle engines
C. aeroplane engines
D. diesel engines

A. 1500 rpm
B. 750 rpm
C. 3000 rpm
D. Any value independent of engine speed