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Plumbing 4th Year 2021 BC CANADA > Basic Electricity > Flashcards

Flashcards in Basic Electricity Deck (17)
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1

The number of millivolts in one volt is

1000

2

Most transformers in hvac are reduced to what voltage

24v

3

To decrease the resistance in an electrical circuit you must

Increase the wire size
Possibly run parallel circuit..

4

The term continuity testing means:

Proving a continuous conducting path in an electrical circuit

5

When checking a 24v circuit for continuity with an ohm meter , you must ?

Disconect the power source from circuit

6

Most heating and cooling safety controls are

Series circuits

7

An iron core inserted into a coil will cause the magnetic field to?

Increase

8

The resistance of the wiring in a circuit

Decreases with an increase in wire diameter

9

The unit used to measure resistance is a

Ohm

10

A solenoid valve, with an open coil would indicate what condition during a continuity check

OL no continuity
High resistance
Infinite resistance

11

Electrical energy is produced when electrons are

Freed from their atoms

12

The force that causes the electrons to flow through the conductor is measured in?

Volts = Electromotor force

13

The flow through a conductor of fixed resistance can be increased by increasing the?

Voltage

14

One amp will flow through a resistance of one ohm when it is forced by?

One volt = force

15

Symbol for voltage

E

16

Symbol for current is

I

17

Symbol for resistance is ?

R