Top 350+ Solved Automobile Engineering MCQ Questions Answer
Q. Which part is not common between the petrol and diesel engines
a. Battery
b. Dynamo
c. Air cleaner
d. Fuel injector
e. Exhaust silencer
Q. The problem of exhaust emissions can be handled by
a. engine design modification
b. treatment of exhaust gases
c. fuel modification
d. All of the above
e. None of the above
Q. The heating value of petrol is
a. 7650 kcal/kg
b. 10,000-10400 kcal/kg
c. 15000-16000 kcal/kg
d. 8000-8500 kcal/kg
e. 12750-13850 kcal/kg
Q. The king pin inclination is usually
a. Less than
b. Between 2? and 5?
c. More than 7?
d. More than 7?
e. Between 1? to 2?
Q. Which of the following can be used for starting a 1000 H.P. diesel engine?
a. Battery
b. Shunt motor
c. Small petrol engine
d. Compressed air
e. Any of the above
Q. In a scooter engine the cylinder is lubricated by
a. Cylinder does not require lubrication
b. Lubrication plug
c. Pressure lubrication
d. Splash lubrication
e. Mixing lubricating oil in the fuel
Q. Which one of the following is independent of fuel constituents, combustion chamber design, temperature and pressure of compressed charge
a. Pinking
b. Pre-ignition
c. Knocking
d. none of the above
e. None of the above
Q. Engine pistons are generally made of aluminium alloy because
a. It has less wear
b. It is stronger
c. It absorbs shocks
d. It does not react with fuel as well as lubricating oil
e. It is lighter
Q. Springs are made of
a. Carbon steel
b. Stainless steel
c. High speed steel
d. Mild steel
e. Spring steel
Q. The breaking up of a liquid into fine droplets by spraying is called
a. Injection
b. Vaporization
c. Atomisation
d. Ionisation
e. Carburetion
Q. Which fuel has maximum resistance to detonation
a. n-heptane
b. Toluene
c. Isoctave
d. Benzene
e. Alcohol
Q. A square type engine
a. Has operating speed as 64, 81, 100, 121, 144, 169, 196 rpm or the like
b. Has cylinder bore equal to stroke length
c. Has four cylinders with phase shift of 90? between any two consecutive cylinders
d. Has two cylinders horizontal and two cylinders vertical
e. Has geometrical shape as square
Q. For balancing single cylinder engine a counter weight is added to
a. Crankshaft
b. Piston rings
c. Piston
d. Gudgeon pin
e. Connecting rod
Q. In an engine shows lack of power on running the probable cause could be
a. Poor compression
b. Faulty ignition
c. Overheating
d. Over cooling
e. Any of the above
Q. If the end mixture of S.I. engine is having low temperature and long igition delay, then knocking will
a. accelerate
b. decrease
c. remain constant
d. none of the above
e. None of the above