Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.
Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.
QUIZ
Test Conducted by: ObjectiveBooks.com
Next Mock Tests:
01. The motion of the cam is transferred to the valves through
(A) Pistons
(B) Rocker arms
(C) Camshaft pulley
(D) Valve stems
Answer: Option B
02. In a four stroke cycle diesel engine, the inlet valve
(A) Opens at 20° before top dead centre and closes at 40° after bottom dead centre
(B) Opens at 20° after top dead centre and closes at 20° before bottom dead centre
(C) Opens at top dead centre and closes at bottom dead centre
(D) May open and close anywhere
Answer: Option A
03. In order to mix air and petrol in the required proportion and to supply it to the engine during suction stroke, then _________ is employed.
(A) Fuel pump
(B) Injector
(C) Carburettor
(D) None of these
Answer: Option C
04. An imbalance wheel during vehicle operation
(A) Makes large noise when its heavy point hits the road surface
(B) Deflects in the vehicle's longitudinal direction
(C) Bounces vertically or deflects from side to side (as seen from front or rear)
(D) Creates a standing wave
Answer: Option C
05. The purpose of transmission in an automobile is
(A) To vary the speed of automobile
(B) To vary the torque at the wheels
(C) To vary the power of automobile
(D) None of these
Answer: Option B
06. A higher compression ratio causes
(A) Pre-ignition
(B) Increase in detonation
(C) Acceleration in the rate of combustion
(D) Any one of these
Answer: Option D
07. A petrol engine has compression ratio from
(A) 6 to 10
(B) 10 to 15
(C) 15 to 25
(D) 25 to 40
Answer: Option A
08. Which of the following is not a part of the chassis?
(A) Wheels
(B) Front axle
(C) Steering system
(D) Seats
Answer: Option D
09. The specific fuel consumption per B.P. hour for a diesel engine is about
(A) 0.2 kg
(B) 0.25 kg
(C) 0.3 kg
(D) 0.35 kg
Answer: Option A
10. In a Diesel engine, the fuel is ignited by
(A) An electric spark
(B) The heat of compression
(C) The hot exhaust
(D) None of these
Answer: Option B
11. The Diesel engines as compared to petrol engines require
(A) Bigger flywheel
(B) Smaller flywheel
(C) Same size of flywheel
(D) No flywheel
Answer: Option A
12. The operation of forcing additional air under pressure into the engine cylinder is known as
(A) Supercharging
(B) Carburetion
(C) Turbulence
(D) Delay period
Answer: Option A
13. 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
Answer: Option C
14. If the temperature of intake air in internal combustion engine increases, then its efficiency will
(A) Remain same
(B) Decrease
(C) Increase
(D) None of these
Answer: Option B
15. The pressure at the end of compression in the case of diesel engine is of the order of
(A) 6 kg/cm
(B) 12 kg/cm
(C) 20 kg/cm
(D) 35 kg/cm
Answer: Option D
