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MCQs

Total Questions : 118 | Page 8 of 12 pages
Question 71. . A potentiometer has how many leads?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Question 72. . What happens to current and resistance if the voltage doubles?
  1.    Current doubles and resistance doubles.
  2.    Current doubles and resistance is halved.
  3.    Current remains the same and resistance doubles.
  4.    Current doubles and resistance remains the same.
 Discuss Question
Answer: Option D. -> Current doubles and resistance remains the same.
Question 73. . What is the ratio of 13 to 47 expressed in percent?
  1.    2.76%
  2.    27.7%
  3.    3.60%
  4.    36.1%
 Discuss Question
Answer: Option B. -> 27.7%
Question 74. . One problem with mechanically variable resistors is noticeable in audio circuits as:
  1.    scratchy noise
  2.    lack of bass response
  3.    variable volume
  4.    too much treble response
 Discuss Question
Answer: Option A. -> scratchy noise
Question 75. . A color code of orange, orange, orange is for what ohmic value?
  1.    22 kilohms
  2.    3300 ohms
  3.    44000 ohms
  4.    33 kilohms
 Discuss Question
Answer: Option D. -> 33 kilohms
Question 76. .  A conductor's cross-sectional area in circular mils for 1/2 onehalf.gif inch is:
  1.    500 cmils
  2.    100,000 cmils
  3.    1,000,000 cmils
  4.    500,000,000 cmils
 Discuss Question
Answer: Option C. -> 1,000,000 cmils
Question 77. .  If a variable resistor's resistance varies in a nonuniform manner as the shaft is moved, it is considered to be:
  1.    linear
  2.    defective
  3.    not wirewound
  4.    tapered
 Discuss Question
Answer: Option D. -> tapered
Question 78. . Power is measured in units of:
  1.    joules x charge
  2.    joules/work
  3.    joules x voltage
  4.    joules/time
 Discuss Question
Answer: Option D. -> joules/time
Question 79. . How many basic types of resistors exist?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Question 80. . Components designed to oppose the flow of current are called:
  1.    insulators
  2.    conductors
  3.    resistors
  4.    heat exchangers
 Discuss Question
Answer: Option C. -> resistors

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