Motor Vehicle Inspector • Paper-I
In four stroke cycle engine, one cycle is completed in
A)
180 degree
B)
360 degree
C)
540 degree
D)
720 degree
Based on established principles in the relevant subject area, the correct and most appropriate choice is '540 degree' (Option C).
Motor Vehicle Inspector • Paper-I
In I.C. engine, the stroke in which the inlet valve is open and the exhaust valve is closed is called
A)
Exhaust stroke
B)
Power stroke
C)
Compression stroke
D)
Suction stroke
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Power stroke' (Option B).
Motor Vehicle Inspector • Paper-I
Which of the following is not an arc welding process?
A)
TIG welding
B)
Electro slag welding
C)
Electro gas welding
D)
Seam welding
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Electro slag welding' (Option B).
Motor Vehicle Inspector • Paper-I
An impression formed in a damp sand or other suitable material is called
A)
pattern
B)
fettling
C)
core
D)
mould
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'pattern' (Option A).
Motor Vehicle Inspector • Paper-I
Engine overheating may result due to
A)
radiator pressure cap stuck closed
B)
thermostat stuck open
C)
broken fan belt
D)
excess coolant in the system
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'radiator pressure cap stuck closed' (Option A).
Motor Vehicle Inspector • Paper-I
In the I.C. engines, the ratio of thermal efficiency of an actual cycle to that of the ideal cycle is called
A)
thermal efficiency
B)
mechanical efficiency
C)
volumetric efficiency
D)
relative efficiency
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'thermal efficiency' (Option A).
Motor Vehicle Inspector • Paper-I
For most common gases and vapours at the atmospheric pressure, the arc temperature is of the order of
A)
4000oC
B)
5000oC
C)
6000oC
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '5000oC' (Option B).
Motor Vehicle Inspector • Paper-I
The octane number of Iso-octane is
A)
0
B)
10
C)
80
D)
100
Based on established principles in the relevant subject area, the correct and most appropriate choice is '80' (Option C).
Motor Vehicle Inspector • Paper-I
Which of the following is not part of a wheel?
A)
valve hole
B)
centre hole
C)
waddle
D)
flange
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'waddle' (Option C).
Motor Vehicle Inspector • Paper-I
In horizontal boring machine, the cross slide is fitted on the
A)
saddle
B)
table
C)
headstock
D)
end supporting column
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'headstock' (Option C).
Motor Vehicle Inspector • Paper-I
Over a given equal period of time, capstan and turret lathe will produce
A)
less number of pieces than engine lathe
B)
more number of pieces than engine lathe
C)
equal number of pieces as that of engine lathe
D)
none of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'less number of pieces than engine lathe' (Option A).
Motor Vehicle Inspector • Paper-I
The four operations i.e, suction, compression, expansion and exhaust in a four stroke cycle engine are completed in the number of revolutions of the crankshaft equal to –
A)
one
B)
two
C)
three
D)
four
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'three' (Option C).
Motor Vehicle Inspector • Paper-I
Which of the following brazing is most suitable for large-scale production?
A)
torch brazing
B)
furnace brazing
C)
resistance brazing
D)
immersion brazing
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'immersion brazing' (Option D).
Motor Vehicle Inspector • Paper-I
Steel is an alloy of Iron and Carbon with substantial quantities of manganese and silicon, carbon content of which is generally less than
A)
2%
B)
3%
C)
6.67%
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '3%' (Option B).
Motor Vehicle Inspector • Paper-I
A vernier scale consists of 25 divisions on 12mm spacing and the main scale has 24 divisions on 12mm. What is the least count?
A)
0.01mm
B)
0.02mm
C)
0.04mm
D)
none of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is '0.04mm' (Option C).
Motor Vehicle Inspector • Paper-I
The degree of agreement of the measured size with its true magnitude as expressed in standard units of measurements is
A)
precision
B)
accuracy
C)
sensitivity
D)
all of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'all of these' (Option D).
Motor Vehicle Inspector • Paper-I
The primary function of lubrication is to
A)
provide cooling effect
B)
provide sealing action
C)
provide cleaning action
D)
reduce wear
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'provide sealing action' (Option B).
Motor Vehicle Inspector • Paper-I
Case hardening is done by
A)
carburising
B)
nitriding
C)
cyanide hardening
D)
all of the above.
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'all of the above.' (Option D).
Motor Vehicle Inspector • Paper-I
A high cetane number fuel will
A)
ignite easily
B)
not ignite easily
C)
cause detonation
D)
cause combustion knock
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'cause detonation' (Option C).
Motor Vehicle Inspector • Paper-I
Oxy-acetylene welding is particularly suitable for joining metal sheets and plates having thickness of 2 mm to
A)
50 mm
B)
80 mm
C)
100 mm
D)
120 mm
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is '100 mm' (Option C).
Motor Vehicle Inspector • Paper-I
In soft soldering, the solder is mostly composed of
A)
aluminum and zinc
B)
copper and tin
C)
lead and tin
D)
aluminum and lead
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'aluminum and lead' (Option D).
Motor Vehicle Inspector • Paper-I
The oxygen (gas) cutting process can cut
A)
brass
B)
bronze
C)
alluminium
D)
mild steel
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'brass' (Option A).
Motor Vehicle Inspector • Paper-I
Most commonly used lubricants in automobiles are the
A)
animal oils
B)
mineral oils
C)
vegetable oils
D)
synthetic oils
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'animal oils' (Option A).
Motor Vehicle Inspector • Paper-I
Two general types of tyres are
A)
tube type and tubeless
B)
solid and tubeless
C)
air and pneumatic
D)
split-rim and drop-centre
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'air and pneumatic' (Option C).
Motor Vehicle Inspector • Paper-I
The part of the cooling - system thermostat that opens and closes the valve is the
A)
seater
B)
wax pellet
C)
pressure valve
D)
vacuum valve
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'pressure valve' (Option C).
