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1.

The furniture rollers are provided with negative castor.(a) True(b) FalseI got this question in an interview for internship.Origin of the question is Steering System in chapter Steering & Front Axle of Automobile Engineering

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Correct answer is (b) False

To explain I would SAY: The furniture rollers are provided with positive castor. The positive castor gives more directional STABILITY. In positive castor, steering axis would meet the ground AHEAD of the center of the roller. The later wheel would ALWAYS follow the FORMER wheel.

2.

What is the angle between the vertical when the top of the wheel slants outward?(a) Negative camber(b) Negative castor(c) Positive camber(d) Positive castorThe question was posed to me in class test.Question is taken from Steering System in chapter Steering & Front Axle of Automobile Engineering

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The correct answer is (c) Positive camber

To elaborate: The angle between the vertical when the top of the wheel SLANTS outward is CALLED positive camber. Positive camber will LEAD to DECREASE in TURNING radius and thus lead to a decrease in the steering effort.

3.

What is the purpose of the reciprocating ball type steering gear?(a) To reduce the operating cost(b) To reduce the number of parts(c) To reduce the operating friction(d) To reduce the toe-out during the turnsI have been asked this question in an interview.This intriguing question originated from Steering System in chapter Steering & Front Axle of Automobile Engineering

Answer» CORRECT answer is (c) To reduce the OPERATING FRICTION

To explain: The RECIPROCATING ball TYPE steering gear serve the purpose of reducing the friction and wear of the gear.
4.

What is called the cornering force over the slip angle?(a) Castor trail(b) Cornering power(c) Self-righting torque(d) Pneumatic trailI got this question in a job interview.Question is from Steering System topic in chapter Steering & Front Axle of Automobile Engineering

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Correct option is (b) CORNERING POWER

Best EXPLANATION: The ratio of cornering force to the slip angle is called the cornering power. The cornering power increases due to tire STIFFNESS.

5.

What is the name of the angle through which the wheel has to turn to sustain the side force?(a) Slip angle(b) Castor angle(c) Camber(d) Kingpin inclinationThis question was posed to me during an interview for a job.This intriguing question comes from Steering System topic in division Steering & Front Axle of Automobile Engineering

Answer» CORRECT option is (a) Slip angle

Best explanation: The slip angle is the angle through which the wheel has to be TURNED to sustain the side FORCE on the wheel. The force produced DUE to this which counters the side thrust is known as cornering force.
6.

If the front of the front wheels is inside and rear of front wheels are apart when the vehicle is at rest, then the configuration is called?(a) Toe-in(b) Toe out(c) Positive camber(d) Positive castorThis question was addressed to me in semester exam.My question is from Steering System topic in section Steering & Front Axle of Automobile Engineering

Answer» CORRECT answer is (a) Toe-in

To explain: Toe-in is the amount by which the front WHEELS are set closer together at the front than at the rear when the vehicle is stationary. Toe-in provided GENERALLY LESS than 3 MM.
7.

What is the angle between the steering axis and the vertical in the plane of the wheel?(a) Castor(b) Camber(c) Steering axis inclination(d) Kingpin inclinationI have been asked this question in unit test.The question is from Steering System topic in section Steering & Front Axle of Automobile Engineering

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The CORRECT ANSWER is (a) CASTOR

To elaborate: Castor is the angle between the steering axis and the vertical in the plane of the wheel. POSITIVE castor IMPROVES the straight-line stability of the car.

8.

The front axle of a car has pivot centers 1.3 m apart. The angle of inside lock is 40℃ and the angle of the outside lock is 35℃. What is the wheelbase of the car?(a) 5.5 m(b) 3.5 m(c) 4.5 m(d) 6.5The question was posed to me in class test.The query is from Steering System in division Steering & Front Axle of Automobile Engineering

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Correct answer is (a) 5.5 m

Best explanation: For correct steering, cot α – cot θ = c / B where c = PIVOT center, b = WHEELBASE, α = angle of outside LOCK, and θ = angle of inside lock. Cot α – Cot θ = c / b ⇒ Cot 35 – Cot 40 = 1.3 / b⇒ b = 5.49 m.

9.

What is a condition called when the vehicle will try to move away from its normal direction and to keep it on the right path there is need to steer a little?(a) Understeer(b) Oversteer(c) Reversibility(d) IrreversibilityThe question was asked in an interview.Asked question is from Steering System topic in section Steering & Front Axle of Automobile Engineering

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The CORRECT answer is (a) Understeer

To explain I would say: When the SLIP angles of the FRONT wheels are GREATER than those for the rear wheels, the radius of the turn is INCREASED. Due to which there is the need to steer more than required which is called understeer.

10.

If the wheelbase, the pivot center, and wheel track of the are 2.5 m, 1.1 m, and 1.3 m respectively. The angle of the inside lock is 42℃. What is the circle radius of the outer front wheel?(a) 2.6 m(b) 3.6 m(c) 4.6 m(d) 1.6 mI got this question during an interview for a job.My enquiry is from Steering System in portion Steering & Front Axle of Automobile Engineering

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The correct option is (B) 3.6 m

The EXPLANATION is: b = wheelbase = 2.5 m, c = pivot center = 1.1 m, a = wheel track = 1.3 m, and θ = angle of inside lock = 42℃. For the inner front wheel, RADIUS =\(\frac{b}{sin⁡\theta} – \frac{a – c}{2} = \frac{2.5}{sin⁡42} – \frac{1.3 – 1.1}{2}\) = 3.6 m