Wheels And Tires — Part 1 MCQs with Explanations

The statement "The ratio of section width to section height is known as the aspect ratio" is True . In the context of automotive wheels and tires, the aspect ratio is indeed the ratio of the tire's section width to its section height. The section width of a tire refers to the width of the tire's cross-section (from sidewall to sidewall) in millimeters. The section height of a tire is the height of the tire's cross-section (from the rim to the outer tread) in millimeters. The aspect ratio is calculated as: $$\text{Aspect Ratio} = \frac{\text{Section Width}}{\text{Section Height}}$$ It's an important parameter that affects the tire's performance and characteristics, such as sidewall height and ride comfort. So, the statement is True .

Imagine a wheel lying flat on the ground. The fixing face is the part of the wheel that touches the car's hub (where the wheel bolts on). The center line of the rim is an imaginary line that runs right down the middle of the wheel's width. Now, the question asks: What happens if that center line is *inside* the fixing face? Think of it like this: the wheel's center is "pushed in" relative to where it mounts on the car. * Inset wheel: An inset wheel means the wheel's mounting surface (fixing face) is located *outward* further than the wheel's centerline. Therefore, the wheel's centerline lies *inside* the fixing face. This is your answer! * Outset wheel: An outset wheel is the opposite. The wheel's mounting surface is closer to the centerline of the vehicle, meaning the wheel will stick out from the car further. * Zeroset wheel: A zeroset wheel is where the mounting surface is exactly in line with the centerline of the wheel. Therefore, the correct answer is Inset wheel (Option B) .

Option A: Right front tyre This option suggests that the right front tire wears the most on a car. This statement is correct for most countries where cars are driven on the right side of the road. The right front tire is subjected to additional wear due to factors such as increased load during turning and braking, as well as alignment issues. Option B: Right rear tyre This option suggests that the right rear tire wears the most on a car. This statement is generally incorrect. The rear tires tend to wear more evenly compared to the front tires, as they are subjected to less steering and braking forces. Option C: Left front tyre This option suggests that the left front tire wears the most on a car. This statement is incorrect for most countries where cars are driven on the right side of the road. The left front tire does not experience the same level of stress and load as the right front tire. Option D: Left rear tyre This option suggests that the left rear tire wears the most on a car. This statement is incorrect. The rear tires, including the left rear tire, usually wear more evenly and are less prone to the forces affecting the front tires. Conclusion: The correct answer is Option A: Right front tyre because in most driving conditions, especially in countries where cars drive on the right side of the road, the right front tire is subjected to more wear due to increased load during turning, braking, and alignment issues.

Outset wheel is the correct answer to “A wheel so constructed that the centre line of the rim is located out board of the attachment face of the disc is called-”. This question is standard in competitive examination syllabi for Wheels And Tires.

True is the correct answer to “Mag wheels are called as such because they are cast from magnesium-”. This question is standard in competitive examination syllabi for Wheels And Tires.

Valve aperture is the correct answer to “The hole or slot in the rim which accommodates the valve for tyre inflation is called-”. This question is standard in competitive examination syllabi for Wheels And Tires.

Ambient temperature is the correct answer to “The temperature at which tyre inflation pressure should be checked is”. This question is standard in competitive examination syllabi for Wheels And Tires.

Breakers is the correct answer to “Which is the rubber-covered cords similar to plies”. This question is standard in competitive examination syllabi for Wheels And Tires.

Divided wheel is the correct answer to “A wheel constructed in two parts, which when securely fastened to together, combine to form a rim having two fixed flanges is called”. This question is standard in competitive examination syllabi for Wheels And Tires.

Section height to section width is the correct answer to “The aspect ratio (expressed in percentage) of the tyre is defined as the ratio of”. This question is standard in competitive examination syllabi for Wheels And Tires.

Bounces vertically or deflects from side to side (as seen from the front or rear) is the correct answer to “An imbalance wheel during vehicle operation”. This question is standard in competitive examination syllabi for Wheels And Tires.

Bearing against rim is the correct answer to “The bead usually provides”. This question is standard in competitive examination syllabi for Wheels And Tires.

Tread is the correct answer to “The shoulder to shoulder width of the tyre represents the-”. This question is standard in competitive examination syllabi for Wheels And Tires.

The radius of unloaded fully inflated tyre is the correct answer to “The radius of a pneumatic tyre is”. This question is standard in competitive examination syllabi for Wheels And Tires.

Rims are flat based and they are not airtight is the correct answer to “In heavier vehicles, tubeless tyres cannot be used because”. This question is standard in competitive examination syllabi for Wheels And Tires.

Beads is the correct answer to “Steel wires fitted in circles are called-”. This question is standard in competitive examination syllabi for Wheels And Tires.

65 is the correct answer to “If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is”. This question is standard in competitive examination syllabi for Wheels And Tires.

Side wall is the correct answer to “Which part of the automobile tyre is subjected to greatest flexing action”. This question is standard in competitive examination syllabi for Wheels And Tires.

Steering wheel vibration is the correct answer to “Which of the following problem is caused due to wheel imbalance”. This question is standard in competitive examination syllabi for Wheels And Tires.

Tread is the correct answer to “The part of the tyre which contacts the road surface is called”. This question is standard in competitive examination syllabi for Wheels And Tires.

Wire wheel is the correct answer to “The type of wheel which cannot be used with a tubeless tyre is”. This question is standard in competitive examination syllabi for Wheels And Tires.

Reduce the slippage between tyre and road while taking a turn is the correct answer to “The distance between dual tyres of vehicles is to be correctly spaced to”. This question is standard in competitive examination syllabi for Wheels And Tires.

Cushion is the correct answer to “Which of the following is the soft heat resistance rubber, that absorbs road shocks and also bind plies and breaker together”. This question is standard in competitive examination syllabi for Wheels And Tires.

Grip the road and provide good traction is the correct answer to “The basic purpose of tyres is to”. This question is standard in competitive examination syllabi for Wheels And Tires.

Tractive effort is the correct answer to “The torque available at the contact between driving wheels and road is known as”. This question is standard in competitive examination syllabi for Wheels And Tires.

Tube is the correct answer to “A bag of rubber in which air is filled through valve is-”. This question is standard in competitive examination syllabi for Wheels And Tires.

Inflated is the correct answer to “For a through inspection a tyre should be”. This question is standard in competitive examination syllabi for Wheels And Tires.

One ply layer runs diagonally one way and another layer runs diagonally the other way is the correct answer to “In bias ply tyres”. This question is standard in competitive examination syllabi for Wheels And Tires.

Both are correct is the correct answer to “Which of the following is/are the functions of tyres”. This question is standard in competitive examination syllabi for Wheels And Tires.

Hub through a number of wire spokes is the correct answer to “In a wire wheel, wheel rim is attached to”. This question is standard in competitive examination syllabi for Wheels And Tires.

Spur gear is the correct answer to “The type of gear wheels used in sliding mesh gear box is:”. This question is standard in competitive examination syllabi for Wheels And Tires.

Reduces is the correct answer to “The alloy wheel . . . . . . . . the unsprung mass, in comparison to steel disc wheel.”. This question is standard in competitive examination syllabi for Wheels And Tires.

Wheel centre is the correct answer to “That part of the wheel which is the supporting member between the axle and the rim is called-”. This question is standard in competitive examination syllabi for Wheels And Tires.

Both are correct is the correct answer to “Which of the following factor affect the wheel and tyre assembly balance”. This question is standard in competitive examination syllabi for Wheels And Tires.

Attach the appropriate weights to the wheel at appropriate positions is the correct answer to “The correct way to rectify an imbalanced wheel is to”. This question is standard in competitive examination syllabi for Wheels And Tires.

28% is the correct answer to “Steel belt radial tyres offer . . . . . . . . less resistance as compared to conventional tyres hence vehicle using such tyres consumes less fuel.”. This question is standard in competitive examination syllabi for Wheels And Tires.

Cushion is the correct answer to “. . . . . . . . is soft heat resistance rubber.”. This question is standard in competitive examination syllabi for Wheels And Tires.

Steering wheel vibrations and uneven tyre wear is the correct answer to “The problems caused by the wheel imbalance are”. This question is standard in competitive examination syllabi for Wheels And Tires.

All of the above is the correct answer to “For wheel and tyre troubles the cause of the trouble Loss of pressure is-”. This question is standard in competitive examination syllabi for Wheels And Tires.

All of the above is the correct answer to “The main function of a tyre is”. This question is standard in competitive examination syllabi for Wheels And Tires.