Q. Lube oil is used in diesel engines
1) To ignite
2) To cool the engine
3) To reduce friction
4) 2 and 3 both
Q. Air is charged in the cylinder of diesel engine by
1) Exhaust valve
2) Inlet valve
3) Injector
4) Air Box
Q. Type of filter fitted in a tractor is
1) Paper Type
2) Cotton Type
3) Oil-bath Type
4) Wire Mesh Type
Q. Nichrome is commonly used for
1) Transformer windings
2) Battery connetions
3) Lamp filament
4) Heater coils
Q. For a flexible cable, most suitable insulation is
1) Glass fibre
2) Magnesium oxide
3) Polyvenyl chloride
4) Insulating tape
Q. Function of a carburator is
1) To mix petrol with air
2) To supply petrol to the engine
3) To purify the air
4) To purify the petrol
Q. The supply which cannot pass through condensor
1) Is DC supply
2) Is 12 volt AC
3) Is AC supply
4) Depends on the type of circuit
Q. The terminal impedance of folded dipole television antenna is kept
1) 300 ohms
2) 75 ohms
3) 0 ohm
4) 100 ohms
Q. The efficiency of an air-conditioning plant is expressed by
1) Percentage
2) Temperature
3) C.P.O.
4) Tonnes
Q. A plug guage is used to measure the
1) Pitch of thread
2) Bores of cyclinders
3) Angles
4) Flatness
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