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MCQs

Total Questions : 118 | Page 9 of 12 pages
Question 81. . With a complex circuit, a supply source senses:
  1.    open circuit components
  2.    when voltages need to be increased
  3.    only a single resistive connection
  4.    when complex currents are needed
 Discuss Question
Answer: Option C. -> only a single resistive connection
Question 82. . How many amps are used by a 100 watt, 120 volt light bulb?
  1.    1.2 amps
  2.    12000 amps
  3.    830 mA
  4.    12 amps
 Discuss Question
Answer: Option C. -> 830 mA
Question 83. . The source is 24 volts and the load resistance is 100 . What is the load current?
  1.    2.4 A
  2.    240 mA
  3.    24 mA
  4.    2.4 mA
 Discuss Question
Answer: Option B. -> 240 mA
Question 84. . Which is the most important step utilized when measuring resistors?
  1.    use the highest possible scale
  2.    keep test leads short
  3.    zero the meter before using
  4.    remove power from the circuit
 Discuss Question
Answer: Option D. -> remove power from the circuit
Question 85. . Resistors are identified as to wattage by:
  1.    size
  2.    color code
  3.    types of materials
  4.    internal construction
 Discuss Question
Answer: Option A. -> size
Question 86. . The load resistance increases. How will the load current change?
  1.    vary
  2.    remain constant
  3.    increase
  4.    decrease
 Discuss Question
Answer: Option D. -> decrease
Question 87. . How many connections does a rheostat have?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Question 88. . What type of resistors have a tolerance rating of 5% or greater?
  1.    precision
  2.    SIP
  3.    general-purpose
  4.    wirewound
 Discuss Question
Answer: Option C. -> general-purpose
Question 89. . What are the parts of a rheostat?
  1.    wiper and resistor track
  2.    solenoid and armature
  3.    contact and wire wound
  4.    center tape and wiper
 Discuss Question
Answer: Option A. -> wiper and resistor track
Question 90. . What is the power dissipated by a 1.2 komega.gif resistor with 12 volts across it?
  1.    12 W
  2.    1.2 W
  3.    .12 W
  4.    12 mW
 Discuss Question
Answer: Option C. -> .12 W

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