At a Latitude of +50°,how Far Above the Horizon Is

question 41

Multiple Choice

At a latitude of +50°,how far above the horizon is the north celestial pole?

• A) 0°
• B) 40°
• C) 50°
• D) 90°

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Definitions:

Metering Valve

Used on vehicles equipped with hydraulic front disc and rear drum brakes to improve brake balance; holds off application pressure to front brakes until pressure builds in the hydraulic circuit to move the rear shoes into contact with the brake drums.

Proportioning Valve

A hydraulic brake valve used on vehicles equipped with front disc and rear drum brake. Its function is to reduce application pressure to the rear drum brakes to prevent premature lockup under severe braking.

Proportioning Valve

A valve in a vehicle's brake system that modulates the pressure to the rear brakes to prevent them from locking up during braking.

Rear Wheel Lock-up

A dangerous condition where the rear wheels of a vehicle cease to rotate while in motion, often leading to loss of control.