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Flashcards in Elec Final Deck (24):
1

A triangle which contains only two equal sides

Isosceles triangle

2

What voltage can be present on the cathode of electron gun

25 KV

3

Which of the following is not an application of oscilloscope measurement

Measure current amplitude

4

Which of the following controls will vertically adjust the electron beam

Volts division

5

What position is the CAL control knob normally placed

Fully clockwise

6

What are the two basic types of probes used in our oscilloscopes

X one X 10

7

Moderate increase to an above normal current over a period of time is an explanation of

Overload

8

What is the maximum voltage and current rating of a plug fuse

150 V 30 A

9

What is expected interrupting capacity of an HRC fuse

200 kamps

10

Under what conditions must a HRC fuse be used for circuit protection

Over 10,000 A

11

What type of breaker is capable of protecting equipment from overload

Thermal

12

What term is used to describe a breaker that trips even though it handled is held in the opposition

Trip free

13

What type of breaker protects against overcurrent only

Magnetic

14

What does a single pole GFCI breaker measure to monitor leakage current

In balance current between hot and neutral connection

15

What residential circuits are to be protected by our fault current breaker

Bedroom receptacles

16

Which following factor will have no effect on the magnitude of induced voltage produced by an alternator

Mean pole polarity

17

What is the term that represents the distance from one point of a way for him to wear it repeats itself

Cycle

18

How many electrical degrees of induced voltage are produced from for Pool alternator that rotates one mechanical revolution

720

19

The DC circuit contains a series connected resistor and capacitor as the voltage across the capacitor increases the current flowing through the circuit blank and the voltage across the current limiting resister blank

Decreases decreases

20

The current that realay coil draws is due to

Coil resistance

21

The total late opening of the lamp is measured in

Lumens

22

The unit for illumination is

Lux

23

And angle which is less than 90° is commonly called a

Acute angle

24

What device is used to activate the Mercury switch contacts in a common thermostat

By metallic element