30 câu hỏi
Where is the clutch located?
Between transmission and engine
Between transmission and rear axle
Between transmission and propeller shaft
Between transmission and differential
Which of the following parts of the cover assembly hold the pressure plate against the clutch plate?
Springs
Thrust bearings
Struts
Lever
Which of the following is the coefficient of friction of the clutch plate?
1.3
0.8
0.4
0.14
What does the venturi in the carburetor cause?
Increase of air velocity
A decrease in air velocity
A decrease in fuel flow
Decrease of manifold vacuum
Where does the power for the mechanical fuel pump come from?
Camshaft
Crankshaft
Distributor shaft
Propeller shaft
How can a two-stroke engine be identified?
Piston size
Absence of valves
Cooling system
Lubrication system
At which stroke is the fuel injected in the CI engine?
Suction stroke
Compression stroke
Expansion stroke
Exhaust stroke
The stroke of an engine is the _________
Volume of the cylinder
Length of the connecting rod
Internal diameter of the cylinder
Distance between TDC and BDC
In a four-stroke engine, each cylinder has
One valve
Two valves
Three valves
Four valves
The valve is opened as the cam lobe on the cam raises the
Bearing
Piston
Valve lifter
Valve seat
Which of the following is the need of the gearbox?
To vary the speed of the vehicle
To vary the torque of the vehicle
To vary the power of the vehicle
To vary the acceleration of the vehicle
In which type of manual transmission is double-declutching used?
Constant-mesh gearbox
Sliding mesh gearbox
Synchromesh gearbox
Epicyclical gearbox
Where is the overdrive located?
Between transmission and engine
Between transmission and rear axle
Between transmission and propeller shaft
Between transmission and differential
Which of the following is not part of automatic transmission?
Epicyclic gearbox
Torque converter
Multi-plate clutch
Sliding mesh gearbox
Why are the helical gears used commonly in transmission over spur gears?
Low cost and high strength
Low noise level and high strength
Low noise level and economy
Low noise level and low cost
Increase of torque in a vehicle is obtained by decreasing power.
True
False
Which types of joints are used when the shafts are inclined?
Universal joint
Hinge joint
Ball and socket joint
Pivot joint
Which of the following is the disadvantage of the open differential?
High in cost
Not reliable
Complex design
Sends most of the power to the wheel having less traction
Why do the hypoid gears require special lubricant?
Teeth are soft
Teeth are hard
Gears run faster
There is relative motion between teeth
What is the need of the universal joint?
To change inclination
To bend sideways
To transfer torque at an angle
To change length
A two-piece propeller shaft requires one universal joint.
True
False
Which of the following is not considered while deciding the optimum firing order of the engine?
Engine vibration
Engine cooling
Development of the backpressure
Engine configuration
Why is the Dwell meter used?
To set the spark plug gap
To set the ignition advance
To set the contact breaker gap
To set ignition timing
On which condition does the vacuum advance mechanism shift the ignition point?
Under part-load operation
Under full load operation
Under no-load operation
Under sudden acceleration
The conventional direction of electric field is ________
Positive to negative
Negative to positive
No specific direction
Direction cannot be determined
Electric field originates at __________
Positive charge
Negative charge
Neither positive nor negative
Both positive and negative
Electric field terminates at ________
Positive charge
Negative charge
Neither positive nor negative
Both positive and negative
Which among the following statements is true with regard to electric field lines?
Electric field lines always intersect
Electric field lines may or may not intersect
Electric field lines can be seen
Electric field lines never intersect
A field that spreads outwards in all directions is __________
Linear
Radial
Weak
Strong
The insulant between the two plates of a capacitor is called _______
Conductor
Semi-conductor
Dielectric
Superconductor