A front stabilizer bar is used to
A. Increase vehicle load carrying capacity
B. Provide a softer ride
C. Control suspension movement and body roll
D. All of the above
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The aluminium alloy is used in cylinder blocks because
A. It is lighter and has good heat dissipation characteristics
B. Material cost is low
C. It does not require any cylinder liners
D. The piston is also made of aluminium alloy
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The main function of a master cylinder is to
A. Adjust the extent of brake pedal free play
B. Boost the force applied to brake pedal
C. Convert brake pedal force into hydraulic pressure
D. Ensure that all the wheel brakes are supplied with the same amount of fluid pressure
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The firing order for an inline four cylinder I.C. engine is
A. 1-2-3-4
B. 1-3-4-2
C. 1-2-4-3
D. 1-3-2-4
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The firing order for an opposed four cylinder l.C. engine is
A. 1-2-3-4
B. 1-3-4-2
C. 1-4-3-2
D. 1-3-2-4
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The indicated power of a four stroke engine (in watts) is equal to (where P = Mean effective pressure in N/m2 , L = Length of stroke in metres, A = Cross-sectional area of the piston in m2 and N = Speed of the engine in revolutions per second (r.p.s)
A. 2 P .L .A .N .
B. P.L.A.N.
C. 2 × P.L.A.N.
D. 4 P .L .A .N .
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The rating of C.I. engine fuel (Diesel) is given by
A. Octane number
B. Performance number
C. Cetane number
D. None of these
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The capacity of a battery is usually expressed in terms of
A. Volts
B. Amperes
C. Weight
D. Ampere hours
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If clearance volume of I.C. engines is increased, the compression ratio will
A. Increase
B. Decrease
C. Remain constant
D. Be doubled
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The calorific value of Diesel is about
A. 36.5 MJ/kg
B. 38.5 MJ/kg
C. 42.5 MJ/kg
D. 45.5 MJ/kg
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The specific gravity of Diesel is about
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A four cylinder engine has a capacity of 2.4 litres. The swept volume of one cylinder is
A. 400 cm3
B. 600 cm3
C. 1,200 cm3
D. 2,400 cm3
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The calorific value of petrol is about
A. 36.5-38.5 MJ/kg
B. 39.4-42.5 MJ/kg
C. 42.7-43.5 MJ/kg
D. 45.5-47 MJ/kg
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The specific gravity of petrol is about
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The crescent shaped cavity on the piston head top surface is called as
A. Piston oil hole
B. Snap ring
C. Valve recess
D. Valve clearance
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The formula for Iso-octane is
A. C8 H18
B. C7 H17
C. C6 H18
D. C7 H18
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The mechanical efficiency ( η m ) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)
A. B .P . I .P .
B. I .P . B .P .
C. F .P . B .P .
D. B .P . F .P .
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The function of a second ring is that it is a
A. Back up compression ring which will work in place of the top ring when it is broken
B. Compression ring and aids the top ring in sealing and cooling
C. Back up oil control ring which will work in place of the bottom ring when it is broken
D. Cushion ring which prevents piston slap and knock
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The starting system includes
A. A battery, a starter, and an ignition switch
B. A battery, a distributor, and an ignition switch
C. A battery, a starter, and a distributor
D. A distributor, a starter, and an ignition switch
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The parking brake generally acts on
A. Front wheels
B. Rear wheels
C. Front and rear wheels
D. Propeller shaft
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