WorksheetsUntitled Quiz
Total questions: 50
Worksheet time: 25mins
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 convertor
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
Which of the following depends on charging and discharging rate of a capacitor?
Time constant
Current
Power
Voltage
What is the initial current while charging a capacitor?
High
Low
0
Cannot be determined
What is the final current while charging a capacitor?
High
Zero
Infinity
Low
Capacitor is a device used to ________.
store electrical energy
vary the resistance
store magnetic energy
dissipate energy
Capacitor stores which type of energy?
kinetic energy
vibrational energy
potential energy
heat energy
Capacitor blocks ________ after long time.
alternating current
direct current
both alternating and direct current
neither alternating nor direct current
Which of the following is a passive device?
Transistor
Rectifier
Capacitor
Vacuum tubes
For which medium capacitance is high?
Air
Mica
Water
Metal
Which component in the DC generator produces a magnetic field?
Stator
Commutator
Armature
Carbon brushes
Which component in an alternator produces a magnetic field?
Frame
Stator
Regulator
Rotor
At the start of the engine, the charging voltage is ______.
Lower
Higher
Same
Zero
In an alternator, which component controls the output?
Voltage regulator
Cutout relay
Current regulator
Diode
What is the material of an alternator frame?
Cast iron
Brass
Copper
Aluminum
If the lead-acid cell has a total of 17 plates, what is the number of positive plates?
9
8
7
6
Which of the following is not an advantage of the alternator?
Higher output
Lower weight
Less maintenance
High efficiency
Field coils in a generator produce permanent magnet.
True
False
What is the colour of a positive plate of a lead-acid battery?
White
Grey
White
Brown
What gets deposited on the plates of a discharged lead-acid battery?
PbO2
Pb2O4
Pb
PbSO4
What is the number of positive plates in a battery cell?
One more than the negative plates
Two less than the negative plates
One less than the negative plates
Two more than the negative plates
What is a maintenance-free battery?
A battery having lead–antimony plate grid
A battery having lead–calcium plate grid
A battery does not contain acid
A battery does not contain water
Which of the following is an advantage of alkaline battery?
High energy density
Good discharge characteristics over a wide range of temperature
The specific gravity of electrolyte remains the same
Cheap raw materials are used
Which of the following is the best method to measure the speed?
Mechanical tachometer
Electrical tachometer
Magnetic pickup
Mechanical counters
The function of the ignition system is to _____________ the flame propagation process.
stop
initiate
balance
none of the mentioned
The total enthalpy required to cause the flame to be self sustaining and promote ignition, is given by the product of the surface area of the spherical flame and the enthalpy per unit area.
True
False
A spark can be caused by applying a sufficiently low voltage between two electrodes separated by a gap.
True
False
An ignition process obeys the law of ____________.
conservation of mass
conservation of energy
conservation of momentum
none of the mentioned
As air is poor conductor of electricity an air gap in an electric circuit acts as a high ____________.
conductor
resistance
ignition
none of the mentioned
An ignition system should provide a good spark between the ____________ of the plugs at the correct timing.
cathodes
anodes
electrodes
none of the mentioned
An ignition system should be heavy, effective and reliable in service.
True
False
The interference from the low voltage source should not affect the functioning of the radio and television receivers inside an automobile.
True
False
