MCQs on Design – Antilock Brake Systems
1 - Question
What is the function of an Anti-lock braking system?
a) Used for car parking
b) To maintain tractive force
c) Programming the system
d) To drive the car
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Explanation: Tractive force used to generate motion between a body and a tangential surface. Antilock brake system maintains the tractive force between the wheel and road surface. The other options mentioned are not the functions of the antilock brake systems.
2 - Question
The skidding of vehicles, while sudden brakes are applied, is avoided through _______
a) antilock braking system
b) engine management system
c) automatic car parking system
d) driving system
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Explanation: The uncontrolled skidding of vehicles while sudden brakes are applied is avoided through an antilock braking system. Antilock brake system increases control over the vehicle and also decreases the stopping distance on the dry and slippery surfaces.
3 - Question
The Anti-lock brake system supports electronic stability.
a) True
b) False
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Explanation: Antilock lock brake system has some special capabilities like electronic stability control, emergency brake assist and electronic brake force distribution. The uncontrolled skidding of vehicles, while sudden brakes are applied, is avoided through an antilock braking system. advertisement
4 - Question
What is the function of the Electronic control unit in Anti-lock braking system?
a) Monitoring the speed of the wheel b) Decreases the stopping distance c) Provides electronic stability control d) Maintaining the tractive force
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5 - Question
What detects the fault in the anti-lock brake system?
a) ECU b) Pump c) Valves d) Sensors
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6 - Question
The Electronic control unit is used to detect the speed of wheels.
a) True
b) False
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Explanation: The Electronic control unit detects if the speed of any wheel is faster than the speed of another wheel and accordingly the pressure on the hydraulic brake is increased or decreased.
7 - Question
Which part of the antilock brake system is used to find the acceleration and deceleration of the wheel?
a) Valves
b) ECU
c) Speed sensors
d) Pumps
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Explanation: We can sense the speed of the vehicle and find the acceleration and deceleration through the speed sensors. The Electronic control unit detects if the speed of any wheel is faster than the speed of another wheel and accordingly the pressure on the hydraulic brake is increased or decreased. Valves are used to pass pressure from hydraulic cylinder towards brakes and Pumps are used to restore pressure. The electronic control unit constantly monitors the rotational speed of each wheel.
8 - Question
Which device is used to pass the pressure from hydraulic cylinder towards brake?
a) Valves
b) Pumps
c) Sensors
d) ECU
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Explanation: Valves are used to pass the pressure from hydraulic cylinder towards brake. When the valve is closed, then it isolates the break from the hydraulic cylinder. Thus, they control the pressure supplied to the brakes. The function of Pump in the automatic brake system is to restore pressure to the hydraulic brake after the valves have released it.
9 - Question
What is the function of Pump in an automatic brake system?
a) For fault detection
b) To sense the speed of the vehicle
c) To restore pressure
d) To find the acceleration and deceleration
View Answer
Explanation: The function of Pump in the automatic brake system is to restore pressure to the hydraulic brake after the valves have released it. The controller sends the signals to the pump to start or stop depending upon the pressure in Hydraulic cylinders.
10 - Question
The breaking valves are actuated and turned on and off through ___________
a) pumps
b) valves
c) sensors
d) modulator
View Answer
Explanation: The breaking valves are actuated and turned on and off through Modulator. Electronic control unit decides the brake force and activates automatic brake system modulator which actuates the breaking valves on and off.