Resistance and Power Questions and Answers

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Q21
If a variable resistor's resistance varies in a nonuniform manner as the shaft is moved, it is considered to be:
  • A linear
  • B defective
  • C not wirewound
  • D tapered
Answer: Option D
Q22
Power is measured in units of:
  • A joules x charge
  • B joules/work
  • C joules x voltage
  • D joules/time
Answer: Option D
Q23
How many basic types of resistors exist?
  • A 1
  • B 2
  • C 3
  • D 4
Answer: Option B
Q24
With a complex circuit, a supply source senses:
  • A open circuit components
  • B when voltages need to be increased
  • C only a single resistive connection
  • D when complex currents are needed
Answer: Option C
Q25
Which is the most important step utilized when measuring resistors?
  • A use the highest possible scale
  • B keep test leads short
  • C zero the meter before using
  • D remove power from the circuit
Answer: Option D
Q26
Components designed to oppose the flow of current are called:
  • A insulators
  • B conductors
  • C resistors
  • D heat exchangers
Answer: Option C
Q27
How many amps are used by a 100 watt, 120 volt light bulb?
  • A 1.2 amps
  • B 12000 amps
  • C 830 mA
  • D 12 amps
Answer: Option C
Q28
Resistors are identified as to wattage by:
  • A size
  • B color code
  • C types of materials
  • D internal construction
Answer: Option A
Q29
What type of resistors have a tolerance rating of 5% or greater?
  • A precision
  • B SIP
  • C general-purpose
  • D wirewound
Answer: Option C
Q30
Resistor tolerance is either printed on the component, or is provided by:
  • A keyed containers
  • B size
  • C color code
  • D ohmmeter reading
Answer: Option C

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