AC/DC Electrical 1
The coil of a relay is a...
Output device
According to Ohms law what voltage level is required to push 1 amp of current through 1 ohm of resistance?
1 Volt
______ protection on a manual starter will prevent the automatic restart o fa motor when recoving from a power loss
Undervoltage
Capacitance is measured in __________.
Farads
The PMMI exam for Electrical 1 will be held when?
Tuesday, November 9, 2021
Voltage across a set of closed N.O. contacts should be..
Zero
How should a fuse be installed in a circuit to insure proper operation?
In Series
True or False: Some manual motor starters use a special sensing coil that verifies the presense of incoming voltage to open the starter contacts when the voltage is below a preset level.
That's True!
To determine if an indicator lamp has failed, measure the lamp's __________.
Resistance
The energy stored by a capacitor is called a(n) __________.
Electrostatic Charge
Alternating current is one type of electrical current; what is the other type?
Direct Current
The amount a conductor resists the flow of electric current is measured in:
Ohms
True/False: The Contacts of a manual starter will remain in the actuated position when power is lost.
That's True!!
When troubleshooting you should always start by:
Identify the Symptom
What is the Mascot of LCCC?
Cougar.
Constant voltage power supplies will maintain a constant voltage output under varying __________.
Loads
One of the effects a capacitor has in a DC circuit is that it will __________.
It will charge to the source voltage
What device detects current leakage in a ground conductor?
GFCI Breaker
What is a Wiggy?
A voltage tester
What was invented on this date, November 5, 1955?
Time Travel.
__________ affects a DC circuit only when the current is first turned on, turned off, or when there is a change in the load resistance.
Inductance
What is the resistance of a circuit that is being supplied by a 20VDC power source that is putting out 5 amps?
4 ohms
True or False: Magnetic contactors open and close their contacts through the use of a magnetic coil.
List the Two Levels of Troubleshooting
Systems Level and Component Level.
Who is the President of LCCC?
Dr. Ann Bieber