Advance electricity ⚡️

Question 1

What is vector

Answer 1

Is a line that indicates both magnitude and direction

Question 2

What is the greatest advantage of AC

Answer 2

Is the fact that AC can be transformed and DC cannot.

Question 3

(Optional) The most common of all AC waveforms

Answer 3

Is the sine wave

Question 4

Cycle

Answer 4

Each complete waveform of 360 degree

Question 5

Frequency

Answer 5

The number of complete cycles that occur in one second

Question 6

Hertz

Answer 6

Frequency is measured in hertz (Hz)

Question 7

The value indicated by almost all AC voltmeter and ammeters

Answer 7

RMS

Question 8

Average Voltage

Answer 8

AC (WHEN VOLTAGE IS RECTIFIED)

THE AMOUNT OF VOLTAGE THAT WOULD BE INDICATED BY A DC VOLTMETER IS THE AVERAGE VALUE.

*THE AMOUNT OF VOLTAGE THAT WOULD BE MEASURED BY A DC VOLTMETER AFTER AN
AC VOLTAGE SINEWAVE
HAS RECTIFIED WITH A FULL WAVE RECTIFIER

Question 9

Reactance

Answer 9

This current-limiting property of the inductor

Question 10

Three Factors determine the capacitance of a capacitor

Answer 10

1. The surface area of the yplates
2. The distance between the plates
3. The type of dielectric used

Question 11

Three factors determine the amount of voltage that will be induced in a conductor.

Answer 11

1.the number of turns of wire
2. The strength of the magnetic field ( flux density)
3. The speed of
the cutting action

Question 12

Impedance

Answer 12

The total opposition to current flow in an electric circuit
THE CURRENT (limiting) HINDERING EFFECT
Z IN A RL or RC CIRCUIT
Impedance is in both RL and RC circuit

Question 13

Resistance

Answer 13

CURRENT LIMITING PROPERTY /EFFECT

The opposition to current flow in an AC or DC circuit

IN AN INDUCTIVE (L) CIRCUIT, WOULD BE INDUCTIVE REACTANCE (XL)

CAPACITIVE (C) CIRCUIT WOULD BE CAPACITIVE REACTANCE

Question 14

In terms of AC and DC how do you describe RMS voltage

Answer 14

Root Mean Square
AN AC VALUE OF VOLTAGE THAT WILL PRODUCE THE SAME POWER AS A LIKE VALUE
OF DC VOLTAGE. THiS EFFECTIVE VALUE IS INDICATED BY AC VOLTMETER AMMETER

RMS=PEAK x 0.707 PEAK = RMS x 1.414

Question 15

INSTANTANEOUS
VOLTAGE

Answer 15

THE VOLTAGE AT ANY POINT DURING THE ROTATION IS EQUAL
TO THE MAX. INDUCED
VOLTAGE TIMES THE sINE ANGLE 0f
ROTATION
E(INST) = E (MAX) *SIN< degree
E(MAX) = E(INST) / SIN< degree

Question 16

PHASE ANGLE
DIFFERENCES IN DIFFERENT CIRCUIT
TYPES

Answer 16

Purely Resistive (R)- 0°
Purely Inductive(L) - 90 degree : with voltage leading ELI
Purely Capacitive (c) - 90 degree :with current leading ICE
Resistance Inductive (RL) - 0 degrees < delta < 90 degrees : voltages leading
Resistive Capacitive (RC) 0 degree < delta< 90 degree current leading