[FEE] Lecture 6

Question 1

It states that the voltage across many types of conducting material is directly proportional to the current flowing through the material

Answer 1

Ohm’s Law

Question 2

The simplest passive circuit element

Answer 2

resistor

Question 3

Is the rate of energy transfer

Answer 3

Electrical Power

Question 4

unit of electrical power equal to one joule of energy consumed in one second

Answer 4

Watt

Question 5

capacity to do work

Answer 5

Electrical Energy

Question 6

Classification of DC Sources in terms of energy source

Answer 6

Chemical sources
Solar and Photovoltaic cells
Thermoelectric Generation
Piezoelectric Generation
Electromagnetic generation
Electrical Conversion

Question 7

In which chemical energy is converted to electrical energy.

Answer 7

chemical sources

Question 8

In which solar energy is converted directly to electrical energy.

Answer 8

Solar and Photovoltaic cells

Question 9

in which heat energy is converted directly to electrical energy.

Answer 9

Thermoelectric Generation

Question 10

in which mechanical energy is converted directly to electrical energy as a result of the application of mechanical forces to crystals of quartz, Rochelle salt, barium titanate and so forth.

Answer 10

Piezoelectric Generation

Question 11

Examples of Piezoelectric Generation

Answer 11

ceramic phono cartridges and underwater sound transducers.

Question 12

which electrical energy is converted to electrical energy in the presence of a magnetic field.

Answer 12

Electromagnetic generation

Question 13

Example of Electromagnetic generation

Answer 13

semiconductors using the Hall Effect.

Question 14

in which alternating electrical energy is converted to direct (dc) electrical energy as a result of rectification or energy conversion.

Answer 14

Electrical Conversion

Question 15

Example of Electrical Conversion

Answer 15

dc power supplies, rotary converters, and motor-generator sets.

Question 16

TWO GENERAL TYPES OF ELECTRIC CIRCUIT

Answer 16

Direct and Alternating Current

Question 17

current that varies in magnitude but not in direction.

Answer 17

Direct Current

Question 18

Three Forms of Direct Current:

Answer 18

Continuous, Unidirectional, and Pulsating Direct Current

Question 19

one in which an energy transfer takes place unidirectionally, with changes in value from instant to instant that either zero or so small that they may be neglected.

Answer 19

Continuous DC

Question 20

when the current does vary somewhat in magnitude but does not reverse in direction

Answer 20

Unidirectional DC

Question 21

one which the magnitude varies considerably and pulsates regularly there being no reversal in direction.

Answer 21

Pulsating DC

Question 22

one in which the direction alternates regularly and, unless otherwise definitely stated, changes periodically in magnitude as well as direction.

Answer 22

Alternating Current

Question 23

although alternating in character, increases and decreases in magnitude and changes in direction periodically with respect to time according to some definite law, in general, successive waves of current do not have the same magnitude.

Answer 23

Oscillating Current

Question 24

An interconnection of one or more electrical devices in which there should be at least one closed path in which current may flow.

Answer 24

Electric Circuit

Question 25

BASIC COMPONENTS OF ELECTRIC CIRCUIT

Answer 25

Voltage Source, Load, Connecting Conductors

Question 26

AUXILIARY COMPONENTS OF ELECTRIC CIRCUIT

Answer 26

Measuring Instruments, Disconnecting Means, Protective Devices