Related Questions

In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?
A 35
B 40
C 45
D 50
In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?
A 35
B 40
C 45
D 50
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
A Low density
B Low temperature
C Long ignition delay
D All of these
If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
A Detonation
B Ignition
C Pre-ignition
D Rumble
In a petrol engine, the high voltage for spark plug is in the order of
A 1000 volts
B 2000 volts
C 11 kilovolts
D 22 kilovolts
A spark plug gap is kept from
A 0.3 to 0.7 mm
B 0.2 to 0.8 mm
C 0.4 to 0.9 mm
D 0.6 to 1.0 mm
Spark plug makes use of which of the following materials for insulation ?
A Porcelain
B Slate
C Asbestos
D Glass
The air gap between the central electrode and ground (or side) electrode of a spark plug is around
A 0.2 mm
B 0.5 mm
C 1 mm
D 1.5 mm
Spark plug is provided in a/an
A Engine having carburettor
B Diesel engine
C Compression ignition engine
D Both (B) & (C)
The advancing of spark timing in spark ignition engines will _________ knocking tendency.
A Increase
B Reduce
C Not effect
D None of these

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