Q.1

Components designed to oppose the flow of current are called:

  • insulators
  • conductors
  • resistors
  • heat exchangers
Q.2

Resistors are identified as to wattage by:

  • size
  • color code
  • types of materials
  • internal construction
Q.3

A wire with a smaller cross-sectional area will produce:

  • less heat
  • more conductance
  • less resistance
  • more heat
Q.4

For P = V2/R, a decrease in resistance should produce:

  • a decrease in power
  • an increase in ohms
  • an increase in power
  • a decrease in current
Q.5

Ohm's law is not:

  • V = IR
  • I = V/R
  • R = IV
  • R = V/I
Q.6

With Ohm's law, if voltage increases and resistance stays the same:

  • current remains the same
  • power decreases
  • current increases
  • resistance decreases
Q.7

Resistors are identified as to wattage by:

  • size
  • color code
  • types of materials
  • internal construction
Q.8

What happens to current and resistance if the voltage doubles?

  • Current doubles and resistance doubles.
  • Current doubles and resistance is halved.
  • Current remains the same and resistance doubles.
  • Current doubles and resistance remains the same.
Q.9

With Ohm's law:

  • current is inversely proportional to resistance
  • resistance is directly proportional to voltage
  • voltage is indirectly proportional to power
  • current is directly proportional to resistance
Q.10

Resistance in a circuit is:

  • opposition to current
  • opposition to voltage
  • the same as current
  • the same as voltage
Q.11

What property does an incandescent lamp possess?

  • cold resistance
  • hot resistance
  • ballast resistance
  • both cold and hot resistance
Q.12

How many joules of energy will a 10 W lamp dissipate in one minute?

  • 10 joules
  • 60 joules
  • 600 joules
  • 3600 joules
Q.13

What type of resistors have a tolerance rating of 5% or greater?

  • precision
  • SIP
  • general-purpose
  • wirewound
Q.14

What are the two major categories for resistors?

  • low and high ohmic value
  • commercial and industrial
  • low and high power value
  • fixed and variable
Q.15

Which formula shows a direct proportionality between power and voltage?

  • V = IR
  • P = VI
  • P = IR
  • I = V/R
Q.16

Power is defined as:

  • the rate at which energy is used
  • watts
  • energy
  • the rate at which energy is generated
Q.17

For P = V2/R, a decrease in resistance should produce:

  • a decrease in power
  • an increase in ohms
  • an increase in power
  • a decrease in current
Q.18

The unit designator for resistance value is the:

  • ampere
  • ohm
  • volt
  • watt
Q.19

One advantage of a carbon film resistor over a carbon composition resistor is:

  • less circuit noise
  • smaller size
  • higher wattage
  • poor tolerance
Q.20

Resistor tolerance is either printed on the component, or is provided by:

  • keyed containers
  • size
  • color code
  • ohmmeter reading
0 h : 0 m : 1 s