QUIZ 1

Question 1

A wave in which the voltage rises at a constant rate with respect to time is a ——-.

Answer 1

linear wave

Question 2

The most common of all AC waveforms is the —–wave.

Answer 2

sine wave

Question 3

Rotating machines normally produce a waveform called a —-wave.

Answer 3

sine wave

Question 4

Each complete waveform of 360 Degrees is called a —-.

Answer 4

cycle

Question 5

The number of cycle completed in one second is called a

Answer 5

frequency

Question 6

The number of frequency is —-

Answer 6

hertz

Question 7

The maximum point of a waveform is called the —–

Answer 7

peak

Question 8

The amplitude of a waveform is measured from

Answer 8

zero to the highest valve obtained in either direction

Question 9

what is the peak voltage of a 277V RMS AC voltage?

Answer 9

391.68V

Question 10

What is the RMS valve of an AC voltage that has a 480V peak?

Answer 10

339.46V

Question 11

—– is the square root of the mean of the square of the instantaneous current

Answer 11

RMS

Question 12

A term used to indicate the same value as the RMS value is the —- value.

Answer 12

effective value

Question 13

If an AC waveform is rectified and converted into DC,the voltage valve that results is the —- value.

Answer 13

average

Question 14

When AC voltage is rectified and converted into DC, the resulting waveform is normally not pure, flat DC. the pulses is called?

Answer 14

ripples

Question 15

What is the average voltage of a full-wave rectified 240V AC voltage?

Answer 15

216.17V

Question 16

In a DC circuit, the product of volts times the amperes is called —-power

Answer 16

true power

Question 17

The unit of measure of the power delivered to the load in a DC circuit is

Answer 17

watts

Question 18

A(n)—- load contains pure resistance.

Answer 18

resistive load

Question 19

When current rise and falls at the same rate as the voltage and reverses the direction of flow when the voltage reverses polarity,the current is said to be—- with the voltage.

Answer 19

in phase

Question 20

The —-effect occures when AC induces eddy currents into the conductor, with cause the electrons to be repelled toward the outer surface of the conductor.

Answer 20

skin effect

Question 21

To help over come the problem with skin effect in high-frequency circuits, conductors with a large amount of —— must be used.

Answer 21

wire serface

Question 22

Square waves are generally produced by electronic devices called

Answer 22

oscillator