Unit D: Electrical and electronics

Question 1

What stands for programmable read only memory?

Answer 1

PROM

Question 2

The value of resistors is expressed in ____.

Answer 2

OHMS

Question 3

Magnetic lines of flux have a direction from ____ ____ to ____ ____.

Answer 3

North pole

South pole

Question 4

A semiconductor that allows current to flow in only one direction is called a ____.

Answer 4

Diode

Question 5

The amount of voltage induced in a conductor moving in a magnetic field is not affected by the number of ____ in the magnetic field.

Answer 5

Electrons

Question 6

The lead of the diode that is connected to the N type material of the diode is called the ____.

Answer 6

Cathode

Question 7

A special diode that can conduct current in a reverse bias connection under certain conditions is called a ____ diode.

Answer 7

Zener

Question 8

Voltage is measured in units called ____.

Answer 8

Volts

Question 9

Protons have a ____ charge.

Answer 9

Postitive

Question 10

A material that is a semiconductor of electricity will have ____ valence electrons.

Answer 10

4

Question 11

An ____ voltage signal is a continuously variable voltage.

Answer 11

Analog

Question 12

The opposition offered by a material to magnetic flux is defined as ____.

Answer 12

Reluctance

Question 13

What stands for random access memory?

Answer 13

RAM

Question 14

When removing battery terminal cables, which cable should be removed first?

Answer 14

Negative cable

Question 15

A ____ cable would be used as an antenna lead for the GPS system on heavy equipment.

Answer 15

Coaxial

Question 16

What is a commonly used material in manufacturing semiconductors?

Answer 16

Silicon

Question 17

Mutual conduction occurs in a coil only when the magnetic field is ____.

Answer 17

Moving

Question 18

When referring to electronic control systems, the acronym ADC stands for:

Answer 18

Analog to Digital Converter

Question 19

Gallium and indium are ____ semiconductor doping materials.

Answer 19

P type

Question 20

Insulators are used to prevent the flow of ____ from one conductor to another.

Answer 20

Electrons

Question 21

Adding resistors in parallel ____ the total resistance of the parallel circuit.

Answer 21

Decreases

Question 22

The stationary part of a generator is called a ____.

Answer 22

Strator

Question 23

When referring to electronic control systems, adjusting the length of time the signal is on compared to the length of time the signal is off is called ____ ____ ____.

Answer 23

Pulse width modulation

Question 24

To reduce the effect of meter loading when using a voltmeter use a voltmeter with a high ____.

Answer 24

Impedance

Question 25

Twisted wire pairs are often used on ____ ____ circuits to limit the magnetic field effect on other electrical circuits.

Answer 25

Fuel injector