Q.1

The cross-sectional area of a conductor is one factor that determines the conductor's resistance to current.

  • True
  • False
Q.2

One ampere of current flowing through one ohm of resistance is equal to:

  • 1 horsepower
  • 1 Btu
  • 1 watt
  • 1 joule
Q.3

Carbon composition resistors are the most common and the least expensive type of fixed-value resistor.

  • True
  • False
Q.4

How many basic types of resistors exist?

  • 1
  • 2
  • 3
  • 4
Q.5

One problem with mechanically variable resistors is noticeable in audio circuits as:

  • scratchy noise
  • lack of bass response
  • variable volume
  • too much treble response
Q.6

Which type of test equipment is used to measure resistors?

  • ohmmeter
  • ammeter
  • voltmeter
  • watt meter
Q.7

How many connections does a rheostat have?

  • 1
  • 2
  • 3
  • 4
Q.8

What is the most commonly used conductor in electronics?

  • aluminum
  • copper
  • gold
  • silver
Q.9

Good insulators:

  • have few electrons in their outer shells
  • have a large dielectric strength
  • have a small breakdown voltage
  • have many electrons in the nucleus
Q.10

With a complex circuit, a supply source senses:

  • open circuit components
  • when voltages need to be increased
  • only a single resistive connection
  • when complex currents are needed
Q.11

A color code of orange, orange, orange is for what ohmic value?

  • 22 kilohms
  • 3300 ohms
  • 44000 ohms
  • 33 kilohms
Q.12

Resistance is:

  • the opposition to current flow accompanied by the dissipation of heat
  • symbolized by R, measured in ohms, and directly proportional to conductance
  • directly proportional to current and voltage
  • represented by the flow of fluid in the fluid circuit
Q.13

What are the parts of a rheostat?

  • wiper and resistor track
  • solenoid and armature
  • contact and wire wound
  • center tape and wiper
Q.14

With Ohm's law, no change in resistance means that current and voltage will be:

  • directly proportional
  • unable to produce energy
  • the same
  • inversely proportional
Q.15

After a lamp is turned on, its filament resistance will change to become:

  • less resistive
  • cooler
  • brighter
  • more resistive
Q.16

A 22-gauge wire will have a diameter in mils of:

  • 10.03
  • 22.35
  • 45.26
  • 71.96
Q.17

If a variable resistor's resistance varies in a nonuniform manner as the shaft is moved, it is considered to be:

  • linear
  • defective
  • not wirewound
  • tapered
Q.18

How many amps are used by a 100 watt, 120 volt light bulb?

  • 1.2 amps
  • 12000 amps
  • 830 mA
  • 12 amps
Q.19

Electrical equipment is protected against excessive current by a(n):

  • fusible wire link
  • insulated glass container
  • metal ended coil
  • circuit opener
Q.20

If a metallic conductor has a positive temperature coefficient of resistance, then:

  • as temperature increases, resistance decreases
  • as current increases, resistance decreases
  • as voltage increases, current increases
  • as temperature increases, resistance increases
0 h : 0 m : 1 s