The friction is high
The friction is unpredictable
The small difference in cooling water temperature or in internal friction has a disproportionate effect
The engine is rarely operated
C. The small difference in cooling water temperature or in internal friction has a disproportionate effect
Beginning of suction stroke
End of suction stroke
Beginning of exhaust stroke
End of exhaust stroke
Same
Less
More
Variable
More
Less
Same
May be more or less depending on engine capacity
Transformer
D.C. generator
Capacitor
Magnetic circuit
SEA 30
SAE 50
SAE 70
SAE 80
1 sec
0.1 sec
0.01 sec
0.001 sec
250°C
500°C
1000°C
2000°C
20 to 25
25 to 30
30 to 40
40 to 55
Napthene
Tetra ethyl lead
Amyl nitrate
Hexadecane
Calorific value of oil
Low heat value of
High heat value of oil
Mean heat value of oil
Low power will be produced
Efficiency will be low
Higher knocking will occur
Black smoke will be produced
Cylinder walls being too hot
Overheated spark plug points
Red hot carbon deposits on cylinder walls
Any one of these
2 %
4 %
8 %
14 %
Low density
Low temperature
Long ignition delay
All of these
15 %
30 %
50 %
70 %
80°C
120°C
180°C
240°C
Beginning of suction stroke
End of suction stroke
End of compression stroke
None of these
Controlling the air-fuel mixture
Controlling the ignition timing
Controlling the exhaust temperature
Reducing the compression ratio
0
50
100
120
500-1000°C
1000-1500°C
1500-2000°C
2000-2500°C
Equal to
Below
Above
None of these
Highly ignitable
More difficult to ignite
Less difficult to ignite
None of these
Instantaneous and rapid burning of the first part of the charge
Instantaneous auto ignition of last part of charge
Delayed burning of the first part of the charge
Reduction of delay period
Remain same
Decrease
Increase
None of these
Exhaust will be smoky
Piston rings would stick into piston grooves
Engine starts overheating
Scavenging occurs
Geometry of the reflector
Energy of neutrons
Properties of the reflector
All of these
Increase
Decrease
Be independent
May increase or decrease depending on other factors
Scavenging
Detonation
Supercharging
Polymerisation
Thermal efficiency
Speed
Power output
Fuel consumption
Air only
Petrol only
A mixture of petrol and air
None of these