When starting a centrifugal pump that is part of a manifold with no check valves. - correct answer
✔✔You should open the suction valve, start the pump and open the discharge valve slowly.
A valve inserted in a water line between the corporation stop and the water meter is generally called. -
correct answer ✔✔Curb cock
To check sheave wear. - correct answer ✔✔Measure each groove angle
Variable pitch sheaves may be used in some cases to provide which of the following types of speed
changes - correct answer ✔✔small
Absolute pressure is gauge - correct answer ✔✔Pressure plus 14.7 psi
Which of the following best describes the basic types of sprinklers systems in a building - correct answer
✔✔Standard wet-type system, Standard dry-type system,
A deluge system
Power equals - correct answer ✔✔Force x distance divided by time
Torches should be inspected for leakage at the - correct answer ✔✔Tip,
Valves,
Hose connections
Smoke detection is usually accomplished by using either photo-electric scanning, ionization chambers or
smoke reflection devices? - correct answer ✔✔True
If a coupling is not properly aligned - correct answer ✔✔1. Will fail quicker
, 2. Wear out equipment and the bearing
To protect a pump and motor against slight misalignment, they are often connected by a. - correct
answer ✔✔Flexible coupling
The coating on a metallic electrode: - correct answer ✔✔Stabilizes the arc and controls oxidation.
When severing a length of 2 inch pipe it is prefferrable to use: - correct answer ✔✔A pipe cutter
What is the main purpose of the emergency electric power system? - correct answer ✔✔Run equipment
essential to human life for safety.
Baffles is a grease interceptor reduce the ___________ within interceptors: - correct answer
✔✔Turbulence
Parralel alignment is: - correct answer ✔✔Where the centerlines of the two shafts are parralel.
Usually, it the motor in a system feels hot and you think it is overloading, you should not open the flow
valve further because: - correct answer ✔✔Increased flow will usually increase horsepower
requirements.
Which of the following alarm will start diesel fire pumps: - correct answer ✔✔Water flow alarm.
What term best describes water used for both drinking and cooking? - correct answer ✔✔Potable
Gate Valves: - correct answer ✔✔Have less pressure drop than most other kinds of valves.
Are available to quick opening models
Critical points of a grease interceptor are elevations of the _____ and _____ in to the water: - correct
answer ✔✔Inlet, outlet