Answer the following statement(s) true (T) or false (F)
1. Peak flow at system fixtures considers the duration of use, frequency of each use, and
the rate of water required.
2. Hot water sizing is conducted in the same way as cold.
3. Cost considerations will not affect the performance of the water supply system.
4. Uniform pressure loss considers that friction will result in a non-uniform pressure loss
throughout the piping system.
5. Pressure is a function of the weight and height of water.
1. True
2. True
3. False
4. False
5. True
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Answer the following statement(s) true (T) or false (F)
1. Potential transformers have ratings from 1,000 to 5,000 volt-amperes (VA). 2. Current transformers are used so that ammeters and the current coils of other instruments and relays can be connected directly to high-current lines. 3. The power factor is equal to the power in kilowatts multiplied by the apparent power in kilovolt-amperes. 4. On a three-phase, three-wire system, two potential transformers of the same rating and two current transformers of the same rating are necessary. 5. In a three-phase, four-wire system, both the interconnected potential and current secondaries are grounded to protect against possible high-voltage hazards.
Which of the following is a function of the hydraulic reservoir?
A. Stores hydraulic oil. B. Helps keep oil clean and free of air. C. Acts as a heat exchanger to help cool the oil. D. All of the above
When performing overhead work on scaffolding, what protective measures must be taken to prevent objects
from falling and striking a person below? A) Fall arrest systems are used. B) Alarm systems should be enabled. C) Toeboards, debris nets, or canopies must be applied. D) Warning tags are posted on the scaffold.
How does a solid state voltage regulator manage alternator output voltage?
A. By rapidly switching the rotor field winding off and on. B. By acting as a digital power supply. C. By rapidly switching the output voltage off and on. D. By filtering the output.