300+ câu trắc nghiệm Tiếng Anh Công nghệ ô tô có đáp án - Phần 8
30 câu hỏi
Which of the following depends on the charging and discharging rate of a capacitor?
Time constant
Current
Power
Voltage
Chọn đáp án A
What is the initial current while charging a capacitor?
High
Low
0
Cannot be determined
Chọn đáp án A
What is the final current while charging a capacitor?
High
Zero
Infinity
Low
Chọn đáp án B
Capacitor is a device used to__________
Store electrical energy
Vary the resistance
Store magnetic energy
Dissipate energy
Chọn đáp án A
Capacitor stores which type of energy?
Kinetic energy
Vibrational energy
Potential energy
Heat energy
Chọn đáp án C
Capacitor blocks__________ after a long time.
Alternating current
Direct current
Both alternating and direct current
Neither alternating nor direct current
Chọn đáp án B
Which of the following is a passive device?
Transistor
Rectifier
Capacitor
Vacuum Tubes
Chọn đáp án C
For which medium is capacitance high?
Air
Mica
Water
Metal
Chọn đáp án D
Which component in the DC generator produces a magnetic field?
Stator
Commutator
Armature
Carbon brushes
Chọn đáp án D
Which component in the alternator produces a magnetic field?
Frame
Stator
Regulator
Rotor
Chọn đáp án D
At the start of the engine, the charging voltage is _______
Lower
Higher
Same
Zero
Chọn đáp án B
In an alternator, which component controls the output?
Voltage regulator
Cutout relay
Current regulator
Diode
Chọn đáp án A
What is the material of an alternator frame?
Cast iron
Brass
Copper
Aluminum
Chọn đáp án D
If the lead-acid cell has a total of 17 cells, then what is the number of positive plates?
9
8
7
6
Chọn đáp án B
Which of the following is not an advantage of the alternator?
Higher output
Lower weight
Less maintenance
High efficiency
Chọn đáp án D
Field coils in a generator produce permanent magnet.
True
False
Chọn đáp án B
What is the color of a positive plate of a lead-acid battery?
White
Grey
White
Brown
Chọn đáp án D
What gets deposited on the plates of a discharged lead-acid battery?
PbO2
Pb2O4
Pb
PbSO4
Chọn đáp án D
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
Chọn đáp án C
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
Chọn đáp án B
Which of the following is the 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
Chọn đáp án C
Which of the following is the best method to measure the speed?
Mechanical tachometer
Electrical tachometer
Magnetic pickup
Mechanical counters
Chọn đáp án C
The function of the ignition system is to _____________ the flame propagation process.
Stop
Initiate
Balance
None of the mentioned
Chọn đáp án B
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
Chọn đáp án A
A spark can be caused by applying a sufficiently low voltage between two electrodes separated by a gap.
True
False
Chọn đáp án B
An ignition process obeys the law of ______________
Conservation of mass
Conservation of energy
Conservation of momentum
None of the mentioned
Chọn đáp án B
As air is a poor conductor of electricity, an air gap in an electric circuit acts as a high _____________
Conductor
Resistance
Ignition
None of the mentioned
Chọn đáp án B
An ignition system should provide a good spark between the _____________ of the plugs at the correct timing.
Cathodes
Anodes
Electrodes
None of the mentioned
Chọn đáp án C
An ignition system should be heavy, effective and reliable in service.
True
False
Chọn đáp án B
The interference from the low voltage source should not affect the functioning of the radio and television receivers inside an automobile.
True
False
Chọn đáp án B
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