Question

1. disc brakes work by:

a. pressing outward from a disc, to stop a drum from rotating
b. stopping a disc inside the transmission
c. pressing inward, on a disc, to stop it from turning
d. stopping the drive axle

1. the engine in your car is sometimes called:

a. a 4-stroke engine
b. an external combustion engine
c. a 2-stroke engine
d. none of the answers

Explanation:

Analyze Question 4

Disc brakes use calipers to squeeze pairs of pads inward against a spinning disc (rotor) to create friction, which slows or stops the vehicle.

• Option A is incorrect because it describes drum brake components incorrectly.
• Option B is incorrect because disc brakes are located at the wheels, not inside the transmission.
• Option C is correct because calipers press inward on a disc to stop it from turning.
• Option D is incorrect because brakes act on the wheel hubs/rotors directly, not by stopping the drive axle itself.

Analyze Question 5

Most modern passenger cars use a four-stroke internal combustion engine.

• Option A is correct because standard car engines operate on a 4-stroke cycle (intake, compression, power, exhaust).
• Option B is incorrect because car engines are internal combustion engines, not external.
• Option C is incorrect because 2-stroke engines are typically used in smaller utility machines or some motorcycles, not standard cars.
• Option D is incorrect since Option A is correct.

Answer:

Question 4

• (A) Pressing outward from a disc, to stop a drum from rotating
• (B) Stopping a disc inside the transmission
• (C) Pressing inward, on a disc, to stop it from turning (Correct answer)
• (D) Stopping the drive axle

Question 5

• (A) A 4-stroke engine (Correct answer)
• (B) An external combustion engine
• (C) A 2-stroke engine
• (D) None of the answers