CM 411 Midterm #1 Quiz Review Questions
If you have a circuit with a 9-volt battery and 3 lights (of equal resistance)
connected in series. What is the voltage across each light? - CORRECT
ANSWER-3 V
If you have a circuit with a 9-volt battery and 3 lights (of equal resistance)
connected in parallel. What is the voltage across each light? - CORRECT
ANSWER-9 V
Which of the following electrical circuit arrangements is most common in
buildings? - CORRECT ANSWER-Parallel circuit
Ohm's Law establishes the relationship between: - CORRECT ANSWER-voltage,
current, and resistance
Ohms is an electrical unit that measures: - CORRECT ANSWER-resistance
Watt is an electrical unit that measures: - CORRECT ANSWER-power
Ampere (amp) is an electrical unit that measures - CORRECT ANSWER-current
Watt/hr is an electrical unit that measures: - CORRECT ANSWER-none of the
above- this is not a real term
Watt-hour is an electrical unit that measures - CORRECT ANSWER-energy
power and energy differs as follows - CORRECT ANSWER-power is
instantaneous, while energy is time dependent
"Nominal size" is the general term commonly used when referring to pipe
diameter, and should not be taken as the actual outside diameter - CORRECT
ANSWER-True
As isometric drawing is not drawn to scale and cannot be used for linear take-offs
- CORRECT ANSWER-True
, What type of pipe is the most commonly used in your potable water take off -
CORRECT ANSWER-copper
"A street elbow differs from a common elbow as street elbows have both male
and female threading" - CORRECT ANSWER-True
From your potable water plan reading assignment, the basement plan showed
redundant vale assembly, this type of arrangement assists with maintenance and
operations. - CORRECT ANSWER-True
Copper tube is available as either drawer of annealed. - CORRECT
ANSWER-True
The primary purpose of a clean out is to access the drain and vent system. -
CORRECT ANSWER-True
CPVC varies from PVC because it contains carbon filters that allows it to stand
high temperatures. - CORRECT ANSWER-False
PEX tubing pipe is a favorite of plumbers due to its ease of handling and fast
installation. - CORRECT ANSWER-True
The sweating of copper fittings required this before soldering - CORRECT
ANSWER-cleaning and flux
The difference between a cable and a wire is - CORRECT ANSWER-a cable is
an assembly of wire
Assuming the same type of insulation, which wire has a larger diameter? -
CORRECT ANSWER-500 kcmil
Which wire can carry more current - CORRECT ANSWER-500 kcmil
The 14 in a cable marked 14/2 indicates: - CORRECT ANSWER-the size of the
wire (the 2 means 2 conductor + ground)
If you have a circuit with a 9-volt battery and 3 lights (of equal resistance)
connected in series. What is the voltage across each light? - CORRECT
ANSWER-3 V
If you have a circuit with a 9-volt battery and 3 lights (of equal resistance)
connected in parallel. What is the voltage across each light? - CORRECT
ANSWER-9 V
Which of the following electrical circuit arrangements is most common in
buildings? - CORRECT ANSWER-Parallel circuit
Ohm's Law establishes the relationship between: - CORRECT ANSWER-voltage,
current, and resistance
Ohms is an electrical unit that measures: - CORRECT ANSWER-resistance
Watt is an electrical unit that measures: - CORRECT ANSWER-power
Ampere (amp) is an electrical unit that measures - CORRECT ANSWER-current
Watt/hr is an electrical unit that measures: - CORRECT ANSWER-none of the
above- this is not a real term
Watt-hour is an electrical unit that measures - CORRECT ANSWER-energy
power and energy differs as follows - CORRECT ANSWER-power is
instantaneous, while energy is time dependent
"Nominal size" is the general term commonly used when referring to pipe
diameter, and should not be taken as the actual outside diameter - CORRECT
ANSWER-True
As isometric drawing is not drawn to scale and cannot be used for linear take-offs
- CORRECT ANSWER-True
, What type of pipe is the most commonly used in your potable water take off -
CORRECT ANSWER-copper
"A street elbow differs from a common elbow as street elbows have both male
and female threading" - CORRECT ANSWER-True
From your potable water plan reading assignment, the basement plan showed
redundant vale assembly, this type of arrangement assists with maintenance and
operations. - CORRECT ANSWER-True
Copper tube is available as either drawer of annealed. - CORRECT
ANSWER-True
The primary purpose of a clean out is to access the drain and vent system. -
CORRECT ANSWER-True
CPVC varies from PVC because it contains carbon filters that allows it to stand
high temperatures. - CORRECT ANSWER-False
PEX tubing pipe is a favorite of plumbers due to its ease of handling and fast
installation. - CORRECT ANSWER-True
The sweating of copper fittings required this before soldering - CORRECT
ANSWER-cleaning and flux
The difference between a cable and a wire is - CORRECT ANSWER-a cable is
an assembly of wire
Assuming the same type of insulation, which wire has a larger diameter? -
CORRECT ANSWER-500 kcmil
Which wire can carry more current - CORRECT ANSWER-500 kcmil
The 14 in a cable marked 14/2 indicates: - CORRECT ANSWER-the size of the
wire (the 2 means 2 conductor + ground)
