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OIT EXAM | 223 QUESTIONS | WITH ACTUAL SOLUTIONS, SOLVED TO PASS!!
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OIT EXAM | 223 QUESTIONS | WITH ACTUAL SOLUTIONS, SOLVED TO PASS!!
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OIT EXAM | 223QUESTIONS | WITH
ACTUAL SOLUTIONS,
SOLVED TO PASS!!
IOT
Evatee 10/22/24 IOT
,OIT EXAM | 223 QUESTIONS | WITH ACTUAL
SOLUTIONS, SOLVED TO PASS!!
What are colloids? Answer - Very small particles suspended in water which are
resistant to settling.
What is turbidity measured in? Answer - Nephelometric Turbidity Units (NTU)
What is the turbidity measurement that is visible to the naked eye? Answer - 5
NTU
What is an important indicator of treatment efficiency and particularly the
efficiency of filters and disinfection processes? Answer - Turbidity
Why are particles that cause turbidity harmful? Answer - They can hide or
entrap harmful organisms so that the disinfectant is unable to reach them. It
calls increases CL demand which can be carcinogenic
What are the 2 types of sampling? Answer - Grab samples and composite
samples
What are grab samples and when is it used? Answer - A single sample taken at
one place and time. Used when water quality and quantity are not variable
What is a composite sample and when is it used? Answer - A series of samples
taken over a period of time which are combined to form a single sample.
Necessary if water quality changes greatly over time.
, What is voltage? Answer - Electrical potential or potential difference between
two points. Indicated the strength of the "push" on current
What is current and what are its units? Answer - Flow off electric charge.
Measured in amperes
What is the typical rate of change (Hz) or alternating current? Answer - 60
cycles per second
What happens when wires or appliances carry more than their rated capacity
of current? Answer - May overheat and cause fires. Circuit breakers stop this
What is the equation for voltage? Answer - V=IR
What is Power (P), what is is measured in and what is the formula? Answer -
The rate at which work is done or energy is produced.
Measured in Watts
P=VI
What is the symbol for flow and what is the formula for it? Answer - Flow (Q)
Q= AV
What can flow provide info on? Answer - Dentention time in tanks, flow
between various processes or sections, chemical feed rates, etc.
What are the types of flow measurement determined by? Answer - Whether
water is flowing in a closed pipe of an open channel
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