SYSTEMS IN MECHANICAL ENGINEERING
UNIT – 3
Vehicles and their specifications
1) Which of these falls under LMV(Light Motor Vehicle) category based on capacity?
a) Motorbikes
b) Cars
c) Buses
d) Trains
Ans: (b)
2) Most of the ______________ vehicles have automatic transmission.
a) Indian
b) Japanese
c) American
d) British
Ans: (c)
3) A delivery van falls under the category of which type of vehicles.
a) Heavy passenger vehicles
b) Light passenger vehicles
c) Heavy goods vehicles
d) Light goods vehicles
Ans: (d)
4) Load per axle for a vehicle can be reduced by which of the following methods.
a) By increasing distance between the axles
b) By increasing the number of tyres
c) By increasing the number of axles
d) By decreasing the length of an axle
Ans: (c)
5) Abbreviation HEVs stands for what
a) Highly Efficient Vehicles
b) Hybrid Electric Vehicles
c) Highly Economic Vehicles
d) Highly Engineered Vehicles
Ans: (b)
6) In Automobile, what does SUV stand for?
a) Sport Utility Vehicle
b) Sub-urban Utility Vehicles
c) Short Urban Vehicles
d) Super Utility Vehicles
Ans: (a)
7) Two general types of tyres are
(a) Tube type and tubeless
(b) Solid and tubeless
(c) Air and pneumatic
(d) Split rim and drop center
Ans: (a)
8) The motion of cam is transferred to the valves through
(a) Piston
(b) Rocker arms
(c) camshaft pulley
(d) valve stems
Ans: (b)
9) The power actually developed inside the engine cylinder is called as
(a) Indicated power
(b) Brake power
(c) Frictional power
(d) None of these
Ans: (a)
10) The advantage of tubeless tyre over tube tyre is
(a) Slow air leakage
(b) Better fuel efficiency
(c) Less chances of running flat
(d) All of the above
Ans: (d)
11) Abbreviation LMV stands for
(a) Liquid motor vehicle
(b) Light motor vehicle
(c) Light medium vehicle
(d) None of these
Ans: (b)
12) Abbreviation HMV stands for
(a) Heavy motor vehicle
(b) High motor vehicle
(c) High medium vehicle
(d) None of the above
Ans: (a)
13) Compression Ratio in diesel engine is lesser than that in Spark Ignition engine.
a) True
b) No
c) They are equal
d) Doesn’t matter
Ans: (b)
14) Petrol engine are more economical than diesel engine.
a) True
b) False
Ans: (b)
15) The following components forms valve operating mechanism except
(a) Push rod
(b) Rocker arm
(c) Valve seat
(d) Fork
Ans: (d)
16) Which of the following is not a type of gearbox
(a) Linear mesh gearbox
(b) Sliding mesh gearbox
(c) Constant mesh gearbox
(d) Synchromesh gearbox
Ans: (a)
17) In I C Engine the combustion of fuel takes place inside ______
(a) Piston
(b) Crankcase
(c) Cylinder
(d) All of the above
Ans: (c)
18) The material used for manufacturing of cylinder in I C Engine is
(a) Steel
(b) Cast Iron
(c) Copper
(d) None of the above
Ans: (b)
19) The function of cylinder head is
(a) to heat the air and fuel
(b) to produce spark
(c) to seal top end of cylinder
(d) All of the above
Ans: (c)
20) The function of piston is
(a) to transmit gas force to the crank through connecting rod
(b) to produce spark
(c) to seal top end of cylinder
(d) All of the above
Ans: (a)
21) Which component used in engine to avoid leakage of gas to crank case.
(a) Piston
(b) spark plug
(c) crank
(d) Piston rings
Ans: (d)
22) The function of connecting rod is
(a) to convert reciprocating motion of piston into reciprocating motion of crankshaft
(b) to convert reciprocating motion of piston into rotary motion of crankshaft
(c) to convert rotary motion of piston into reciprocating motion of crankshaft
(d) to convert rotary motion of piston into rotary motion of crankshaft
Ans: (b)
23) Connecting rod is connected with crank through
(a) Piston pin
(b) welding
(c) Crank pin
(d) None of the above
Ans: (c)
24) Connecting rod is connected with piston through
(a) Piston pin
(b) welding
(c) Crank pin
(d) None of the above
Ans: (a)
25) In I C Engine the cyclic fluctuation of torque developed by reciprocating engine during a
cycle is reduced by
(a) Cylinder
(b) Flywheel
(c) Crankcase
(d) None of the above
Ans: (b)
26) The component of engine which controls the admission of charge into the cylinder is
(a) Spark plug
(b) Inlet valve
(c) Exhaust valve
(d) None of the above
Ans: (b)
27) The component of engine which controls the discharge of exhaust gases from cylinder is
(a) Spark plug
(b) Inlet valve
(c) Exhaust valve
(d) None of the above
Ans: (c)
28) ______ is the component of I C Engine which provides high intensity spark for combustion
of fuel and air in cylinder in S I Engine.
(a) Spark plug
(b) Piston
(c) Crankshaft
(d) None of the above
Ans: (a)
29) ______ is the component of engine which prepares air fuel mixture for sending it to the
cylinder in S I Engine.
(a) Spark plug
(b) Piston
(c) Crankshaft
(d) Carburettor
Ans: (d)
30) In C I Engines fuel injector is used to
(a) Burn the fuel
(b) inject the fuel to the cylinder
(c) remove the exhaust gases from cylinder
(d) All of the above
Ans: (b)
31) _______ is used to increase the pressure of fuel before sending it to the fuel injector in C I
Engines.
(a) Fuel Injector
(b) Fuel pump
(c) Connecting rod
(d) None of the above
Ans: (b)
32) _______ is the component used in engine to dissipate the heat.
(a) Spark plug
(b) Inlet valve
(c) Exhaust valve
(d) Cooling fins
Ans: (d)
33) In I C Engine Crankshaft is supported in ______
(a) Main Bearings
(b) Connecting rod
(c) Crankcase
(d) Spark plug
Ans: (a)
34) Which method is used for cooling of I C Engine
(a) Air cooling
(b) Water cooling
(c) both a and b
(d) None of the above
Ans: (c)
35) The term ‘BORE’ is
(a) Outer diameter of each cylinder
(b) Inside diameter of each cylinder
(c) Height of each cylinder
(d) None of the above
Ans: (b)
36) The term ‘STROKE’ is
(a) Height of piston
(b) Width of piston
(c) Distance travelled by piston from one dead center to another dead center
(d) None of the above
Ans: (c)
37) The area covered by the piston as it moves from one dead center to another is called
(a) Piston volume
(b) Swept volume
(c) Engine volume
(d) None of the above
Ans: (b)
38) The combine swept volume of all cylinders is called
(a) Cylinder volume
(b) Piston volume
(c) Displacement
(d) All of the above
Ans: (c)
39) The term MPFI stands for
(a) Multipoint fuel injection system
(b) Maximum pressure fuel injection system
(c) Minimum pressure fuel injection system
(d) None of these
Ans: (a)
40) Compression ratio in I C Engine is given by
(a) Clearance volume/Cylinder volume
(b) Cylinder volume/Clearance volume
(c) Cylinder volume/swept volume
(d) None of these
Ans: (b)
41) What is Load Index of tyre in two wheeler or four wheeler.
(a) Width of tyre
(b) Height of tyre
(c) Weight of tyre
(d) Maximum load carrying capacity of tyre
Ans: (d)
42) Weight of vehicle with all standard equipmets and all necessary operating consumables
without passengers and goods is called ______
(a) Gross weight
(b) Kerb weight
(c) Ground clearance
(d) Wheel base
Ans: (b)
43) Distance between flat level ground surface and the lowest part of vehicle is called ______
(a) Wheel base
(b) Maximum length
(c) Ground clearance
(d) None of the above
Ans: (c)
44) Distance between centers of front and rear wheels is called _______
(a) Wheel base
(b) Maximum length
(c) Minimum length
(d) None of the above
Ans: (a)
45) Weight of vehicle with all consumables, driver, passengers and goods is called ______
(a) Kerb weight
(b) Gross weight
(c) Minimum weight
(d) None of the above
Ans: (b)
46) The distance between centerline of two front wheels is called ______
(a) Wheel base
(b) Rear track
(c) Front track
(d) None of the above
Ans: (c)
47) The distance between centerline of two rear wheels is called ______
(a) Wheel base
(b) Rear track
(c) Front track
(d) None of the above
Ans: (b)
48) Space marked in the car to keep the luggage is called ______
(a) Boot space
(b) Front space
(c) Rear space
(d) None of the above
Ans: (a)
49) Following component is not available in Battery Electric vehicles
(a) Charger
(b) Inverter
(c) Transmission unit
(d) I C Engine
Ans: (d)
50) Rechargeable battery in Battery electric vehicles is charged using
(a) Charger
(b) Inverter
(c) Electric grid
(d) All of the above
Ans: (a)
51) ______ controls the supply of electric current from battery to inverter.
(a) Charger
(b) Drive control unit
(c) Rechargeable battery
(d) None of these
Ans: (b)
52) ______ converts DC supply of battery to AC supply in battery electric vehicles.
(a) Battery
(b) Drive control unit
(c) Inverter
(d) Charger
Ans: (c)
53) Transmission unit in battery electric vehicles is powered by ______
(a) Inverter
(b) Electric motor
(c) Battery
(d) Drive control unit
Ans: (b)
54) Which of the following vehicle uses smaller capacity engine and powerful battery
(a) Battery electric vehicle
(b) Series hybrid vehicle
(c) Parallel hybrid vehicle
(d) None of these
Ans: (b)
55) Which of the following vehicle uses powerful engine and smaller capacity battery.
(a) Battery electric vehicle
(b) Series hybrid vehicle
(c) Parallel hybrid vehicle
(d) None of these
Ans: (c)
56) Cost analysis of vehicle is based on
(a) Engine torque
(b) Engine speed
(c) Type of brakes used
(d) All of the above
Ans: (d)
57) More the torque of engine at rated speed, more will be the cost of vehicle.
(a) True
(b) False
Ans: (a)
58) As no. of cylinder in engine increases, the cost of vehicle
(a) Decreases
(b) Increases
(c) Remains same
(d) None of the above
Ans: (b)
59) If drum brakes are used in vehicle instead of disc brakes, the cost of vehicle
(a) Decreases
(b) Increases
(c) Remains same
(d) None of the above
Ans: (a)
60) If water cooling system is used in engine instead of air cooling system, the cost of vehicle
(a) Decreases
(b) Increases
(c) Remains same
(d) None of the above
Ana: (b)
