# Mechatronics Questions and Answers – Advanced Vehicle Control System

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This set of Mechatronics Multiple Choice Questions & Answers (MCQs) focuses on “Advanced Vehicle Control System”.

1. When was first practical power steering invented?
a) 1820
b) 1760
c)1920
d) 1926

Explanation: The first practical power steering invented in the year 1926. The need of power steering emerged greatly during the time war, when there was need of driving heavy military vehicles which needed a lot of force while steering it with normal steering systems.

2. What is the frictional force in a braking system if the brake pads offer a normal force of 20Newton and the coefficient of friction is 0.4?
a) 4Newton
b) 8Newton
c) 2Newton
d) 40Newton

Explanation: 8Newton is the frictional force in a braking system if the brake pads offer a normal force of 20Newton and the coefficient of friction is 0.4.
Given,
Normal force=20Newton
Coefficient of friction=0.4
Frictional force=Normal force*Coefficient of friction
Frictional force=20*0.4=8Newton
Explanation: Active transducers do not require and additional power source for converting the energy from one form to another as they work on the principle of energy conversion. One such example of active transducer is thermocouple.

3. What is the full form of EHPS with respect to vehicle dynamics?
a) Electric-hydro power steering
b) Electro-hydraulic power steering
c) Electro-hydraulic pulse steering
d) Electro-hydraulic power system

Explanation: EHPS with respect to vehicle dynamics stands for Electro-hydraulic power steering. It uses hydraulic systems for assisting the driver of the vehicle. It acts as a power steering and helps the driver to easily turn the vehicle in the desired way.
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4. When was first calliper-type disc brakes patented?
a) 1902
b) 1800
c) 1945
d) 1850

Explanation: The first calliper-type disc brakes patented in the year 1902. It was patented by Frederick William Lanchester in his birmingham factory. It was first tested on the lanchester cars.

5. What is the frictional force in a braking system if the brake pads offer a normal force of 10Newton and the coefficient of friction is 0.4?
a) 4Newton
b) 8Newton
c) 2Newton
d) 40Newton

Explanation:Given,
Normal force = 10Newton
Coefficient of friction = 0.4
Frictional force = Normal force * Coefficient of friction
Frictional force = 10*0.4 = 4Newton

6. What is the frictional force in a braking system of a truck if the drum brake pads offer a normal force of 30Newton and the coefficient of friction at the area of contact is 0.5?
a) 4Newton
b) 7.5Newton
c) 15Newton
d) 40Newton

Explanation: Given,
Normal force=30Newton
Coefficient of friction at the area of contact=0.5
Frictional force = Normal force * Coefficient of friction
Frictional force=30*0.5=15Newton.

7. What is the full form of MDPS with respect to vehicle dynamics?
a) Motor driven pulse steering
b) Motor driven power steering
c) Multi driving power steering
d) Motor driven power system

Explanation: MDPS with respect to vehicle dynamics stands for Motor driven power steering. It uses an electric motor for assisting the driver of the vehicle. It acts as a power steering and helps the driver to easily turn the vehicle in the desired way.

8. Volvo XC90 has automatic braking system.
a) True
b) False

Explanation: Volvo XC90 has automatic braking system. It contains systems that detects the presence of vehicles or objects and apply brakes when they come too close to the car and can be threat.

9. Which is not a self driving car?
a) Tesla Model S
b) NEXT TWO
c) Renault duster
d) Nissan LEAF

Explanation: Renault duster is not a self driving car. Tesla Model S is self driving car made by the company Tesla. NEXT TWO is self driving car made by the company Renault. Nissan LEAF is self driving car made by the company Nissan.

10. What is the frictional force in a braking system of a car if the disc brake pads offer a normal force of 15Newton and the coefficient of friction at the area of contact is 0.5?
a) 4Newton
b) 7.5Newton
c) 2Newton
d) 40Newton

Explanation: Given,
Normal force=15Newton
Coefficient of friction = 0.5
Frictional force = Normal force * Coefficient of friction
Frictional force=15*0.5=7.5Newton

11. Which is the first autopilot ship?
a) Tesla Model S
b) NEXT TWO
c) J.A Moffet
d) Nissan LEAF

Explanation: J.A Moffet was the first autopilot ship. It was a standard oil tanker that became the first ship to use auto pilot in 1920’s. Autopilot systems are fully automatic systems that can constantly control vehicles trajectory without manual guidance.

12. When was first autopilot system developed?
a) 1911
b) 1912
c) 1932
d) 1931

Explanation: The first autopilot system was developed in the year 1912 by Lawrence Sperry. It was just 9 years after wright brothers developed their airplane Kitty Hawk. Sperry’s invention was also named as “Gyroscopic automatic pilot”.

13. Which is the first helicopter with autopilot?
a) Piasecki HUP Retriever
b) NEXT TWO
c) J.A Moffet
d) Nissan LEAF

Explanation: Piasecki HUP Retriever is the first helicopter with autopilot. It was developed by Piasecki Helicopter Corporation of Morton, Pennsylvania. It has a single radial engine with twin overlapping tandem rotor.

14. Who developed the first autopilot system?
a) Lawrence Sperry
b) Joseph Henry
c) Norman Bel Geddes
d) Walther Bothe

Explanation: Lawrence Sperry was an American inventor who developed the first autopilot system. Sperry’s invention was also named as “Gyroscopic automatic pilot”. This system automatically balanced the plane.

15. When was the first steering wheel made?
a) 1911
b) 1894
c) 1832
d) 1831

Explanation: The first steering wheel was made in the year 1894. It is the earliest trace of the presence of steering wheels which was used by Alfred Vachero in his 4 horse powered custom car to participate in Paris-Rouen race.

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