Questions
1
As the number of cylinders in multi cylinder engines increases the power to weight ratio ………
Answer: Increases
2
The maximum pressure of air at the end of compression in diesel engines is about
Answer: 30 Kg/cm2
3
The characteristic of an object which makes it resist any tendency to change its direction of motion is called
Answer: Inertia
4
When we lift a 10 kg weight, 3 metre we would be doing
Answer: 30 m kg of work
5
The maximum pressure of air fuel mixture at the end of compression in petrol engines varies from
Answer: 10-30 Kg/cm2
9
For petrol engines the nominal compression ratio will vary between
Answer: 7.5 to 8.5:1
10
Connecting rods are generally of the following from
Answer: Forged I section steel
11
The temperature of the piston will be more at
Answer: The crown of the piston
13
The crankcase scavenging the the crankcase or underside of the piston acts as
Answer: An air compressor
14
The fuel injected when pressure in the cylinder reaches the point ……….. on the curve
Answer: 3
15
The heat is added in the cycle at
Answer: Approximately constant pressure and constant volume
16
During compression stroke the air is compressed according to
Answer: Adiabatic process
17
During suction stroke the pressure inside the cylinder is
Answer: Below atmospheric pressure
19
In commercial vehicle layouts engine is located forward, rear or under floor mainly to
Answer: Better weight distribution
20
The type of friction generally present in an automotive engine is
Answer: Viscous friction
