Assistant Motor Vehicle Inspector part 7

061. The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is

more.

062. The magneto in an automobile is basically

D.C. generator.

063. Flash point of fuel oil is minimum temperature to which oil is heated to give off inflammable vapours in

sufficient quantity to ignite momentarily when brought in contact with a flame.

066. Energy from gravitational field is energy obtained from

Tides.

067. What is the calorific value of diesel?

45 kJ/kg.

068. A substance which produces a lot of heat on burning is called

Fuel.

069. Which of the following variables controls the physical properties of a perfect gas?

(A) pressure 

(B) temperature 

(C) volume

(D) all the above.

070. In a centrifugal pump casing, the flow of water leaving the impeller, is

free vortex motion.

071. The efficiency of a centrifugal pump is maximum when its blades are

bent backward.

072. Air vessels in reciprocating pump are used to

reduce acceleration to minimum.

073. A fluid is said to be ideal, if it is

inviscous and incompressible.

076. The motion of the cam is transferred to the valves through

Rocker arms.

077. The power developed inside the engine cylinder is called as

Indicated power.

078. Petrol that detonates easily is called

Low octane petrol.

079. The advantage of a tubeless tyre over tube type tyre is

(A) Slow air leakage (B) Better fuel efficiency

(C) Less chances of running flat

(D) All of these

080. The sequence order of events in a four-stroke engine is

Suction - compression - power - exhaust.

081. A maintenance free battery

Has lead-calcium plate grid.

082. The painting of automobiles is done to

(A) Prevent rust from growing on the body

(B) Improve its external appearance

(C) Retain the characteristics of steel for long

(D) All of these

084. If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is

called

Pre-ignition.

085. The engine oil viscosity is defined by which ratings?

Society of Automotive Engineers (SAE).

086. The vehicle ride will be comfortable if

Unsprung mass is kept minimum.

087. The diagram which shows the correct crank positions corresponding to the opening and

closing of the valves, is known as

Valve timing diagram.

088. During braking, the brake shoe is moved outward to force the lining against the

Brake drum.

089. In automobiles G.V.W. refers to

Gross vehicle weight.

090. The engine oil level should be checked

A few minutes after the ignition switch is turned off.