. . . . . . . . to slow down the combustion of the fuel.
A. Oxidation inhibitors
B. Dyes
C. Tetraethyl-lead
D. Anti-icers
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The venturi in the carburettor causes
A. Increase of air velocity
B. Decrease of air velocity
C. Decrease of fuel flow
D. Decrease of manifold vacuum
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Which of the following system (circuits) is in the carburettor?
A. Float system
B. Power system
C. Choke system
D. All are correct
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A straight-run gasoline can be reformed by catalytic means, the product is known as . . . . . . . .
A. Reformed gasoline
B. Analytically cracked gasoline
C. Catalytically reformed gasoline
D. None of the above
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The diesel fuel is ignited in a diesel engine by
A. Spark plugs
B. Heat of compression
C. Distributorless ignition system
D. Glow plugs
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In an electronic fuel injection system, the ECU calculates the optimum fuel injection volume for the current engine condition based on data from a wide range of sensor, and it injects this volume of fuel into the intake manifold at the optimum timing.
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The throttle valve controls the supply of
A. Air only
B. Fuel only
C. Air-fuel mixture
D. None of these
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Normal heptane
A. Helps to resists auto-ignition
B. Accelerates auto-ignition
C. Has no relation with ignition
D. None of the above
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The main function of the float chamber in carburettor is
A. To maintain a constant head fuel
B. To control the quantity of air-fuel mixture
C. To increase the air velocity
D. To inject the fuel into the air stream
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The basic type of fuel-injection system are
A. Common rail system
B. Jerk-pump system
C. Distributor pump system
D. All are correct
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Octane number of iso-octane is
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The amount of heat generated per kg of fuel is known as
A. Calorific value
B. Heat energy
C. Lower calorific value
D. Higher calorific value
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Morse test is conducted on
A. Vertical engines
B. Horizontal engines
C. Single cylinder engines
D. Multi cylinder engines
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Which system is comparatively cheap?
A. Gravity feed system
B. Forced feed system
C. Both are cheap
D. None of these
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An average crude oil yields about . . . . . . . . percentage of straight run gasoline.
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The diesel injection pump is usually driven by a
A. Gear driven from the engine camshaft
B. Belt driven from the engine crankshaft
C. Shaft driven from the engine crankshaft
D. Chain driven from the engine camshaft
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In internal combustion engine terminology, MPFI stands for
A. Multi-pressure Fuel Injection
B. Multi-point Fired Ignition
C. Multi-point Fuel Injection
D. Multi-pressure Fired Ignition
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The impeller type electric fuel pump consists of a pump casing, a DC motor, an impeller, a relief valve, and a check valve.
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Dopes is added to the engine fuel
A. To reduce its detonation tendency
B. To improve lubrication
C. To improve lubrication and reduce detonation
D. None of the above
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Function of carburettor is to supply
A. Air and petrol mixture
B. Air and diesel mixture
C. Only petrol
D. Petrol and diesel mixture
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