Supercharging is essential in_____________?
A. Diesel engines
B. Gas turbines
C. Petrol engines
D. Aircraft engines
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The reason for supercharging in any engine is to________________?
A. Increase efficiency
B. Increase power
C. Reduce weight and bulk for a given out-put
D. Effect fuel economy
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The actual volume of fresh charge admitted in 4-stroke petrol engine is_________________?
A. Equal to stroke volume
B. Equal to stroke volume and clearance volume
C. Less than stroke volume
D. More than stroke volume
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The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be________________?
A. Higher
B. Lower
C. Remain unaffected
D. Unpredictable
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Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following______________?
WhiCh of the following is false statement?
D. None of these
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The size of inlet valve of.an engine in comparison to exhaust valve is_________________?
A. More
B. Less
C. Same
D. More/less depending on capacity of engine
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The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is_______________?
A. Same
B. More
C. Less
D. Less or more depending on operating conditions
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The Ninth SAARC Food Bank Board (SFB) meeting was held in Kathmandu, Nepal in_________?
A. September 2015
B. September 2016
C. September 2017
D. September 2018
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Engine pistons ‘are usually made of aluminium alloy because it_________________?
A. Is lighter
B. Wears less
C. Absorbs shocks
D. Is stronger
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In diesel engine, the compression ratio in comparison to expansion ratio is_______________?
A. Same
B. Less
C. More
D. Variable
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Word of the Day
02 Oct
Stir
move a spoon or other implement round in (a liquid or other substance) in order to mix it thoroughly.
ہلچل، ہلانا

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