Water Treatment Plant Operation Volume 2 Chapter 18
.
- 1.You must recognize tasks that may be beyond your capabilities or repair facilities, you should request assistance when needed
- A.
True
- B.
False
- 2.Opening an electrical circuit is like opening a valve on the water pipe
- A.
True
- B.
False
- 3.Use a megger only to deenergize circuits and motors
- A.
True
- B.
False
- 4.The most important requirements in the reliable operation of electrical equipment are cleanliness and the elimination of moisture into the insulation
- A.
True
- B.
False
- 5.Operators need safety devices to protect themselves and plant equipment from destructive effects of electricity
- A.
True
- B.
False
- 6.A fuse must never be bypassed or jumped
- A.
True
- B.
False
- 7.A Rob driven into the ground is very effective as a ground
- A.
True
- B.
False
- 8.Tap water contains in purity’s that shorten the lifespan of a battery if used to replace lost water
- A.
True
- B.
False
- 9.The main job of grease and pump anti-friction bearings just to protect steel elements against friction, not corrosion
- A.
True
- B.
False
- 10.Misalignment is a major cause of pump and coupling
- A.
True
- B.
False
- 11.Always replace worn sprockets when replacing a chain
- A.
True
- B.
False
- 12.After lubricating variable speed drives, wipe excessive grace from sheaves and belts
- A.
True
- B.
False
- 13.A positive displacement pump (reciprocating or piston type) should never be operated against a closed discharge line
- A.
True
- B.
False
- 14.Gate valves not commonly used to control flows
- A.
True
- B.
False
- 15.Check valve allows water to flow in one direction only
- A.
True
- B.
False
- 16.Cooling water from a heat exchanger should be put back into potable water system
- A.
True
- B.
False
- 17.Diesel fuel cannot be kept in storage for years without deteriorating
- A.
True
- B.
False
- 18.Smoking is promoted at all times during the handling and unloading of carbon and the storage area
- A.
True
- B.
False
- 19.Any chlorine gas leakage in the presence of moisture will cost corrosion
- A.
True
- B.
False
- 20.What is a good plant maintenance program important
- A.
To maintain good relationships with The regulatory agencies
- B.
To maintain communication with equipment vendors
- C.
To maintain successful operation of the plant
- D.
To maintain support from the community
- 21.What is voltage
- A.
The electrical pressure available to cause a flow of current(amperage) an electrical circuit is close
- B.
The level of shock provided by circuit
- C.
The measure of the number of phases provided by the current
- D.
The unit of electric current or an indication of how hard electricity is working
- 22.What does a multimeter check
- A.
Amps
- B.
Kilowatt hours
- C.
Ohm’s
- D.
Voltage
- 23.Why should the electrical panel door be closed when testing circuits
- A.
Because closing the panel door Will conserve energy
- B.
Because greater accuracy with meter readings can be achieved with the door closed
- C.
Because hot copper Sparks could seriously injure you when the circuit is energized and the voltages high
- D.
Because the manufacturers recommend closing the doors to avoid interference from outside light
- 24.Why’s current imbalanced undesirable
- A.
Because it causes noise and cavitation
- B.
Because it causes pulsating flows and waterhammer
- C.
Because it causes uneven heating and a motor that can shorten the life expectancy of the insulation
- D.
Because it causes vibration and wear in a motor
- 25.How was the main control panel and wiring protected from damage due to excessive voltage and amperage
- A.
Fuses
- B.
Insulators
- C.
Meggers
- D.
Ohm meters
Questions: 45 | Attempts: 2704 | Last updated: Mar 21, 2022
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Sample QuestionWhich of the following correctly describes the mechanism of action of niacin?
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