০০। A baffle plate is fitted inside the oil pan to prevent the oil from splashing when it is subjected to vibration and other movement during vehicle operation.
ক) True
খ) False
০১। A basic difference between the spark ignition engine and the Diesel engine is that the
ক) Diesel engine compresses air alone instead of an air-fuel mixture
খ) air temperature ignites the fuel in the Diesel engine
গ) fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
ঘ) all of the above
০২। A battery can be charged by
ক) adding distilled water
খ) adding sulphuric acid
গ) applying voltage in the reverse direction to that of charging
ঘ) applying a voltage in the same direction to that of charging
০৩। A clutch is usually designed to transmit maximum torque which is
ক) equal to the maximum engine torque
খ) 80 per cent of the maximum engine torque
গ) 150 per cent of the maximum engine torque
ঘ) none of these
০৪। A four-cylinder engine has a capacity of 2.4 litres. The swept volume of one cylinder is
ক) 400 cm3
খ) 600 cm3
গ) 1200 cm3
ঘ) 2400 cm3
০৫। A front stabilizer bar is used to
ক) increase vehicle load-carrying capacity
খ) provide a softer ride
গ) control suspension movement and body roll
ঘ) all of the above
০৬। A heat treated glass generally used in automobiles bursts into __________ upon cracking,
ক) sharp edged fragments
খ) small particles
০৭। A laminated glass upon cracking
ক) bursts into sharp edged fragments
খ) bursts into granular pieces
গ) sandwiched layer traps the fragments
ঘ) breaks into the form of crystals
০৮। A maintenance free battery
ক) has lead-antimony plate grid
খ) has lead-calcium plate grid
গ) does not contain acid
ঘ) does not contain water
০৯। A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is
ক) 8.091 N-m
খ) 80.91 N-m
গ) 809.1 N-m
ঘ) 8091 N-m
১০। A petrol that detonates easily is called
ক) high octane petrol
খ) low octane petrol
গ) unleaded petrol
ঘ) blended fuel
১১। A three way catalytic converter
ক) recirculates exhaust gasses
খ) burns fuel vapaour gasses
গ) reduces N2, H2O, and CO2 emission levels
ঘ) removes CO, HC, and NO2 from the exhaust gasses passing through it
১২। A traction control system (TCS) in automobiles controls the
ক) vibrations on the steering wheel
খ) engine power during acceleration
গ) torque that is transmitted by the tyres to the road surface
ঘ) stopping distance in case of emergency
১৩। A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it
ক) improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
খ) allows the steering wheel to be turned by a greater amount when steering
গ) makes the steering more responsive
ঘ) reduces the amount of kick-back for large steering angles
১৪। An engine has a clearance volume of 100 cm3 and a swept volume of 800 cm3. The compression ratio is
ক) 7:1
খ) 8:1
গ) 9:1
ঘ) 10:1
১৫। An imbalance wheel during vehicle operation
ক) makes large noise when its heavy point hits the road surface
খ) deflects in the vehicle‘s longitudinal direction
গ) bounces vertically or deflects from side to side (as seen from front or rear)
ঘ) creates a standing wave
১৬। An oil filter bypass valve opens when the
ক) engine is cold
খ) engine overheats
গ) oil filter becomes clogged
ঘ) engine runs at high speed
১৭। An over-inflated tyre will wear the tread most near the
ক) edges
খ) corners
গ) centre
ঘ) none of these
১৮। An under-inflated tyre will wear the tread most