Water Distribution Systems MCQ with answer and solution

Concept

Pumps can be grouped by type of power, by service (lift), and by working principle.

Step-by-step solution

1. List the bases used to classify pumps in water supply. 2. Based on type of power: steam engine pumps, diesel engine pumps, electric motor pumps, wind mill pumps. 3. Based on type of service: low-lift, high-lift, booster, standby pumps. 4. Based on working principle: centrifugal, reciprocating, air lift pumps. 5. Only the steam engine pump is classified by power, so the answer is D.

Explanation

When pumps are grouped by the power that drives them, we get steam engine, diesel engine, electric and wind mill pumps. Low-lift and high-lift pumps are grouped by service. Centrifugal pumps are grouped by working principle.

Why the other options are wrong

A: Low-lift pump is a type based on service (head), not power. B: High-lift pump is a type based on service (head), not power. C: Centrifugal pump is a type based on working principle, not power.

Shortcut

Look for the option that names a power source (steam, diesel, electric, wind).

Common mistake

Students choose centrifugal pump because it is the most common pump, but it is classified by working principle.