ELC110 final exam
A series circuit has a total resistance of 180 ohms and an applied voltage of 120V. What is the current flow?
0.667A
A parallel circuit composed of a 150 ohms and a 270 ohm resistor has a voltage of 120 V. What is the current in the 150 ohm resistor
0.8A
If there are more than blank conductors and a raceway, the ampacity of the conductors must be derated
3
A parallel circuit composed of a 10 ohm and a 22 ohm resistor. It has a voltage of 60 V. What is the current in the 10 ohm resistor
6 A
Series circuit has a total resistance of 240 ohms and a current flow of 4A. What is the applied voltage
960V
In parallel circuits, the voltage drop across any branch is the same as the blank
Applied voltage
When using a blank ammeter, The meter is only connected to one of the lines
Ayrton
A point that is used as a common connection for other parts of a circuit is called a blank point
Chassis
There are six current carrying conductors in a raceway that is to be installed in an area with ambient temperature of 90°F. It is necessary to blank
Correct for temperature and derate
An increase in blank, not resistance, results in an increase of load
Current
In Series circuits, the blank is the same at any point in the circuit
Current
A voltage blank is used to provide different voltages between certain points in a circuit
Divider
Which of the following formulas is the general voltage divider formula
EX=(Rx/RT)ET
A blank ground symbol is used to symbolize a ground. Made by physically driving an object such as a rod or pipe into the ground
Earth
Imagine a water system with a holding tank, pump, and return lines. What would happen to the resistance to flow if a return path is added to the system
It lessons
In a parallel circuit, the total resistance is blank value resistor
Less then the lowest
To test wire insulation, a special type of ohmmeter is used, called a
Megger
There are two conductors, a red and blue installed in metallic conduit. You are using a Megger to test for shorts. How should the two leads of the Megger should be connected
One to the blue lead and one to the red lead
Materials that increase their resistance with an increase in temperature have a blank coefficient of temperature
Positive
A method for finding total resistance of parallel resistors is
Product over sum, reciprocal formula, resistors of equal value
Solving combination circuits includes a step in which you
Reduce the circuit to a simpler circuit
In a combination circuits, to a identify series and parallel elements, you should
Trace the current paths
Blank is the force that pushes the electrons through a resistance
Voltage
A blank is designed to be connected directly across the power source
Voltmeter
The term load refers to the amount of blank in a circuit branch
current