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43.

The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at                        
A. 1500 rpm B. 750 rpm
C. 3000 rpm D. any value independent of engine speed



44.

The following volume of air is required for consuming 1 liter of fuel by a four stroke engine                        
A. 1 m3 B. 5 m3
C. 5-6 m3 D. 9-10 m3



45.

The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be                        
A. higher B. lower
C. remain unaffected D. unpredictable




46.

The fuel in diesel engine is normally injected at pressure of                        
A. 5-10 kg/cm2 B. 20-25 kg/cm2
C. 60-80 kg/cm2 D. 90-130 kg/cm2



47.

The inlet value of a four stroke cycle I.C engine remains open for nearly                        
A. 180° B. 125°
C. 235° D. 200°



48.

The magneto in an automobile is basically                        
A. transformer B. d.c. generator
C. capacitor D. magnetic circuit



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