WorksheetsMechanic Motor Vehicle
Total questions: 51
Worksheet time: 26mins
firing order of 4 cylinder inline engine?
1,2,4,3
1,3,4,2
1,4,3,2
1,3,2,4
In a four-stroke engine each cylinder has
One valve
Two valves
Three valves
Four valves
The motion of the cam is transferred to the valves through
Pistons
Rocker Arm
Cam shaft Pulley
Valve stems
Which of the following energy conversion devices convert heat into work?
Electrical generators
I. C engines
Condensers
All of the above
The unit of force in S.I. units is
Kilogram
Newton
Watt
Dyne
Diesel fuel, compared to petrol is
less difficult to ignite
just about the same difficult to ignite
more difficult to ignite
highly ignitable
Odometer is an instrument used for measurement of
power
Fuel consumption
Engine speed
distance
Which of the following is not an automobile?
Motor cycle
passenger car
Aeroplane
Truck
The purpose of transmission in an automobile is
to vary the speed of automobile
to vary the torque at the wheels
to vary the power of automobile
None of the above
In a four-stroke engine each cylinder has
One valve
Two valves
Three valves
Four valves
U6. The clutch is a ... .
friction device
mobile device
smart device
small device
The size of the engine intake valve is
Same as that of exhaust valve
Smaller than that of exhaust valve
Larger than that of exhaust valve
Does not depend upon the size of exhaust valve
The device used to measure the clearance between the valve and tappet of an IC Engine is
Feeler gauge
Slip gauge
Micrometer
snap guage
For idling condition in automotive engines, the air-fuel mixture must be
lean
rich
chemically balanced
none of the mentioned
For cruising condition in automotive engines, the air-fuel mixture must be
lean
rich
chemically balanced
none of the mentioned
For high power condition in automotive engines, the air-fuel mixture must be
lean
rich
chemically balanced
none of the mentioned
To prevent overheating of exhaust valve and the area near it, the air-fuel mixture must be
lean
rich
chemically balanced
none of the mentioned
Self ignition temperature of diesel is more than that of diesel
True
False
____________ is the method of governing used in petrol engine.
Quality governing
Hit and miss governing
Quantity governing
All of the mentioned
Tyre pressures should be checked when cold
True
False
What is the name for the part of a tyre in contact with the road?
Tread
Bead
Sidewall
Liner
Name the component displayed
Spark plug
Glow plug
Electrical plug
Sink plug
•A vehicle’s gears are housed in the:
drive shaft
engine
transmission
drive axles
Regarding Power Systems in a vehicle, what a powerplant?
the battery
the fuses
the alternator
the engine
Components of the Emissions System:
engine, headers, tail pipe
catalytic converter, muffler, tailpipe
engine, muffer, catalytic converter
exhaust pipe, CO2 emitter, muffler, tailpipe
Preventive Maintenance involves:
a trip to Advanced Auto
speaking with a mechanic
gas fill up
routine checks
It serves as a step-up transformer, which raises the nominal battery voltage of 12 volts up to the many thousands of volts
IGNITION COIL
BATTERY
IGNITION SWITCH
ROTOR
It is used to connect the high voltage surge to each spark plug
HIGH TENSION CORD/SPARK PLUG WIRE
ROTOR
DISTRIBUTOR
SPARK PLUG
It is a system that delivers spark on the combustion chamber?
SPARK PLUG
CHARGING SYSTEM
IGNITION SYSTEM
STARTING SYSTEM
12. An eight cylinder engine running at 3000 rpm requires __________ spark per minute.
1000
3000
12000
none of the mentioned
12. An eight cylinder engine running at 3000 rpm requires __________ spark per minute.
1000
3000
12000
none of the mentioned
16. In Battery coil ignition system, the correct sequence of flow of current is
Battery – Ammeter – Ignition coil – Distributor – Spark plug
Battery – Ignition coil – Ammeter – Distributor – Spark plug
Battery – Ammeter – Distributor – Ignition coil – Spark plug
Battery – Distributor – Ammeter – Ignition coil – Spark plug
17. The induction coil steps up low voltage current of 6 or 12 volts to high voltage current upto about
10,000 volts
17,000 volts
25,000 volts
35,000 volts
20. The drive shaft in distributor is rotated at ___ the engine speed in four stroke engine
half
equal to
one and half times
double
What is this?
air filter
PVC hose
filter hole
What is this?
spark plug cover
dipstick
engine block
HOW MANY VOLTS DOES A REGULAR VEHICLE BATTERY PRODUCE?
10 volts
13 volts
12 volts
14.5 volts
HOW MANY CELLS DOES A 12 VOLT BATTERY HAVE?
2
4
6
8
HOW MANY VOLTS DOES EACH CELL PRODUCE?
1
4
6
2
WHAT GAS IS GIVEN OFF WHEN THE BATTERY IS BEING CHARGED?
nitrogen
oxygen
hydrogen
WHAT SHOULD YOU WEAR WHEN WORKING ON A BATTERY?
long sleve shirt
eye protection
boots
all of the above
IF BATTERY ACID COMES INTO CONTACT WITH YOUR WHAT SHOULD YOU DO?
take your hands and wipe it off
run for help
wash immediately with running water
wipe it off with a rag
The __________ controls the opening of the engines valves
Camshaft
Crankshaft
Valve springs
combustion chamber
Ratio by weight between the air and fuel that makes up an engine's fuel charge.
drive train
air-fuel ratio
HV battery
lighting system
Components that produce a spark to ignite the air-fuel mixture in the engine.
ignition system
suspension system
semi-automatic transmission
