One psig of pressure is equal to ___ a column of water.

Prepare for the essential 636 Period 3 Motor Final Test with comprehensive flashcards and detailed questions. Access explanations and hints for each question to ace your exam!

Multiple Choice

One psig of pressure is equal to ___ a column of water.

A basic relation in a static liquid is P = γh, where γ is the fluid’s weight density and h is the height of the fluid column. For water, γ is about 62.4 lbf/ft³. To express pressure in psi, use P(psi) = (γh) / 144, since 1 psi = 1 lbf/in² and there are 144 in² per ft². Setting P = 1 psi and solving for h gives h = 144 / 62.4 ≈ 2.31 ft. So 1 psig corresponds to roughly 2.31 feet of water. The other heights would produce smaller pressures (e.g., 1.50 ft ≈ 0.65 psi; 3.20 ft ≈ 1.39 psi; 4.00 ft ≈ 1.73 psi), so 2.31 feet is the correct match for 1 psig.

A basic relation in a static liquid is P = γh, where γ is the fluid’s weight density and h is the height of the fluid column. For water, γ is about 62.4 lbf/ft³. To express pressure in psi, use P(psi) = (γh) / 144, since 1 psi = 1 lbf/in² and there are 144 in² per ft².

Setting P = 1 psi and solving for h gives h = 144 / 62.4 ≈ 2.31 ft. So 1 psig corresponds to roughly 2.31 feet of water. The other heights would produce smaller pressures (e.g., 1.50 ft ≈ 0.65 psi; 3.20 ft ≈ 1.39 psi; 4.00 ft ≈ 1.73 psi), so 2.31 feet is the correct match for 1 psig.

More practice questions