Automobile Engineering MCQ Questions and Answers
Automobile Engineering MCQ Questions and Answers
1- Following method is used to determine the indicated power of a multi-cylinder SI engine
(A) Heat balance test
(B) Prony brake test
(C) Morse test
(D) All of the above
2- Higher value of octane number of fuel indicates
(A) longer ignition delay
(B) low volatility
(C) higher calorific value
(D) higher flash point
3- Following acid is used in automobile battery
(A) HCl
(B) HNO3
(C) H2SO4
(D) All of the above
4- Four wheel drive means
(A) all the four wheels can be steered
(B) vehicle has four wheels
(C) two rear wheels are powered
(D) none of the above
5- The purpose of using ignition eliminators in a compression ignition (CI) engine is to reduce
(A) pre-ignition
(B) combustion knock
(C) detonation
(D) all of the above
6- The temperature indicator provided for automobiles indicates the temperature of
(A) jacket cooling water
(B) lubricating oil
(C) engine piston head
(D) cylinder walls of engine
7- Which one of the following is not related to Spark Ignition (SI) engine?
(A) Spark plug
(B) Battery
(C) Flywheel
(D) Fuel injector
8- Following device is used to reduce exhaust noise
(A) filter
(B) exhaust pipe
(C) muffler
(D) exhaust manifold
9- Cetane number of petrol is around
(A) 05-15
(B) 15-20
(C) 25-35
(D) 40-50
10- The %age of CO in exhaust gases of compression ignition engine is
(A) zero
(B) 5-10%
(C) 10-15%
(D) 15-20%
11- A two stroke engine can be identified by
(A) its weight
(B) size of flywheel used
(C) absence of valves
(D) all of the above
12- In diesel engines, mixing of fuel and air takes place in
(A) injection pump
(B) carburetor
(C) injector
(D) engine cylinder
13- The heat wasted in diesel engine is of the order of
(A) 35%
(B) 45%
(C) 55%
(D) 65%
14- The specific gravity of petrol is about
(A) 0.55
(B) 0.65
(C) 0.75
(D) 0.85
15- The top piston ring is known as
(A) groove ring
(B) oil ring
(C) compression ring
(D) none of the above
16- In loop scavenging, the top of the piston is
(A) contoured
(B) flat
(C) convex shaped
(D) none of the above
17- Which of the following is most viscous lubricating oil.
(A) SAE 80
(B) SAE 70
(C) SAE 50
(D) SAE 40
18- A diesel engine has
(A) no valve
(B) 01 valve
(C) 02 valves
(D) 04 valves
19- The purpose of scavenging is to
(A) speed of engine
(B) thermal efficiency
(C) power output
(D) all of the above
20- The magneto in an automobile engine is
(A) resistance
(B) capacitor
(C) ac generator
(D) dc generator
ANSWERS:
1-(C), 2-(A), 3-(C), 4-(A), 5-(B), 6-(A), 7-(D), 8-(C), 9-(B), 10-(A), 11-(C), 12-(D), 13-(D), 14-(C), 15-(C), 16-(A), 17-(A), 18-(A), 19-(C), 20-(D)