Wheels, Tyres & Brakes 04

Question 1

Tyre “creep” may be described as the;

Select one:

a.gradual circumferential increase of tyre wear

b.the decrease in inflation pressure due to increase in ambient temperature

c.circumferential movement of the tyre in relation to the wheel flange

d.the increase in inflation pressure due to decrease in ambient temperature

Answer 1

c. circumferential movement of the tyre in relation to the wheel flange

Question 2

The ply rating of a tyre:

Select one:

a.Indicates whether or not an inner tube should be fitted

b.Indicates the number of cords or plies in the tyre carcass

c.Indicates the thickness of the carcass of the tyre.

d.Is the index of the tyre’s strength.

Answer 2

d. Is the index of the tyre’s strength.

Question 3

When an anti-skid system is operating the brake pressure will be:

Select one:

a.Increased on the faster turning wheels.

b.Increased on the slower turning wheels.

c.Decreased on the slower turning wheels.

d.Decreased on the faster turning wheels.

Answer 3

c. Decreased on the slower turning wheels.

Question 4

When the Autobrake system is armed
Select one:

a.The system is ready to operate immediately

b.The system operates on selection

c.The system is ready to operate under certain conditions

d.The system will now operate as soon as the pilot releases the brakes

Answer 4

c. The system is ready to operate under certain conditions

Question 5

What is the function of fusible plugs
Select one:

a.Extend the life of the wheel and tyre assembly

b.To provide a controlled release of pressure from the tyre, in the event of an overheat

c.To control the temperature in the tyre

d.To ensure an even pressure in the wheel

Answer 5

b. To provide a controlled release of pressure from the tyre, in the event of an overheat

Question 6

The type of brake unit found on most transport aeroplanes is a ‘Multi-disk’?

Select one:
True
False

Answer 6

True

Question 7

Tyres with a block tread pattern are said to be worn to limits when the pattern is no longer visible

Select one:
True
False

Answer 7

True

Question 8

In what condition must the aircraft brakes be in, to check for brake wear?

a.When cooling fans are running

b.Brakes not on

c.Brakes must be cold

d.Brakes applied

Answer 8

d. Brakes applied

Question 9

How wide are Creep marks on wheels over 24 inches in diameter?

a.1 inch

b.2 inches

c.2.4 inches

d.1.5 inches

Answer 9

d. 1.5 inches

Question 10

Which part of the tyre is the weakest part?

a.The Crown

b.The Bead

c.The side wall

d.The Plys

Answer 10

c. The side wall