CWEA MECHANICAL TECHNOLOGIST
GRADE 1 FINAL PAPER UPDATED
QUESTIONS VERIFIED COMPLETE
ANSWERS 100 PERCENT CORRECT
◉ What type of valve is unsuitable for high-pressure flow?
Answer: A needle valve
◉ What is a gate valve used for?
Answer: Gate valves are among the most common sorts of valves and
taps you will find in most pipeline applications for stopping and
starting fluid flow
◉ What is a needle valve used for?
Answer: A needle valve is a type of valve that uses a tapered needle
to control the flow of fluid. It is often used in applications where
precise control of the flow rate is required, such as in laboratory and
industrial settings. The unique feature of the valve is the structure of
a small plunger with the shape of a needle. The plunger features a
small handle to operate in the easy and precise operation of the
valve.
Learn more:
,◉ What is a ball valve used for?
Answer: A ball valve consists of a hollow, perforated, and pivoting
ball. When the hole through the middle of the ball aligns with the
flow inlet, the valve is open, allowing fluid to pass through. To close
the valve, the ball is pivoted 90 degrees by the valve handle, blocking
the flow.
◉ A Sodium hypochlorite tank is full at 23,000 gallons. It's current
level is at 1,200 gallons. How many gallons will the delivery driver
need to add in order to bring it to 70% capacity?
Answer: 14,900 gallons need to be added to the tank in order for it
to be 70% full
◉ What is 100 degrees Celsius in Fahrenheit?
Answer: 212 degrees Fahrenheit
◉ If 17.32v are applied across a resistance of 50 ohms, how much
power is expended in the resistor?
Answer: 6 Watts
Volt = amp x ohms
17.32 = amp x 50
17.32/50 = 0.34 = amps
, Watts = volts x amps
Watts = 17.32 x 0.34
Watts = 6
◉ A standard steel plate is 4ft x 8ft x 1 inch thick. If steel weighs 490
lbs/ft^3, what is the total weight of this plate?
Answer: 1/12 = 0.083
4 x 8 x 0.083 = 2.656
2.656 x 490 = 1,301.44 lbs
◉ What is the volume in cubic feet of carbon media that is 6 feet
thick in a clarifier that has a 50 foot diameter and is 20 feet deep?
Round the answer to the nearest cubic foot
Answer: 0.785 x 50 x 50 x 6 = 11,775 ft^3
◉ A 150 watt, 120 volt lamp burns constantly for 8 hours at a rated
voltage. What is the energy used in watts/hour?
Answer: 1,200 Watts/hour
◉ The property of an electrical circuit restricts the flow of current
and .......
GRADE 1 FINAL PAPER UPDATED
QUESTIONS VERIFIED COMPLETE
ANSWERS 100 PERCENT CORRECT
◉ What type of valve is unsuitable for high-pressure flow?
Answer: A needle valve
◉ What is a gate valve used for?
Answer: Gate valves are among the most common sorts of valves and
taps you will find in most pipeline applications for stopping and
starting fluid flow
◉ What is a needle valve used for?
Answer: A needle valve is a type of valve that uses a tapered needle
to control the flow of fluid. It is often used in applications where
precise control of the flow rate is required, such as in laboratory and
industrial settings. The unique feature of the valve is the structure of
a small plunger with the shape of a needle. The plunger features a
small handle to operate in the easy and precise operation of the
valve.
Learn more:
,◉ What is a ball valve used for?
Answer: A ball valve consists of a hollow, perforated, and pivoting
ball. When the hole through the middle of the ball aligns with the
flow inlet, the valve is open, allowing fluid to pass through. To close
the valve, the ball is pivoted 90 degrees by the valve handle, blocking
the flow.
◉ A Sodium hypochlorite tank is full at 23,000 gallons. It's current
level is at 1,200 gallons. How many gallons will the delivery driver
need to add in order to bring it to 70% capacity?
Answer: 14,900 gallons need to be added to the tank in order for it
to be 70% full
◉ What is 100 degrees Celsius in Fahrenheit?
Answer: 212 degrees Fahrenheit
◉ If 17.32v are applied across a resistance of 50 ohms, how much
power is expended in the resistor?
Answer: 6 Watts
Volt = amp x ohms
17.32 = amp x 50
17.32/50 = 0.34 = amps
, Watts = volts x amps
Watts = 17.32 x 0.34
Watts = 6
◉ A standard steel plate is 4ft x 8ft x 1 inch thick. If steel weighs 490
lbs/ft^3, what is the total weight of this plate?
Answer: 1/12 = 0.083
4 x 8 x 0.083 = 2.656
2.656 x 490 = 1,301.44 lbs
◉ What is the volume in cubic feet of carbon media that is 6 feet
thick in a clarifier that has a 50 foot diameter and is 20 feet deep?
Round the answer to the nearest cubic foot
Answer: 0.785 x 50 x 50 x 6 = 11,775 ft^3
◉ A 150 watt, 120 volt lamp burns constantly for 8 hours at a rated
voltage. What is the energy used in watts/hour?
Answer: 1,200 Watts/hour
◉ The property of an electrical circuit restricts the flow of current
and .......
