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MCQs

Total Questions : 82 | Page 8 of 9 pages
Question 71. . The loading effect of a voltmeter can be ignored if ____.
  1.    the measured voltage is very high
  2.    the measured voltage is very low
  3.    the meter's resistance is at least 10 times greater than the resistance across which it is connected
  4.    the meter's resistance is at least 10 times less than the resistance across which it is connected
 Discuss Question
Answer: Option C. -> the meter's resistance is at least 10 times greater than the resistance across which it is connected
Question 72. . In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2's voltage will:
  1.    increase
  2.    decrease
  3.    remain the same
  4.    cannot tell
 Discuss Question
Answer: Option B. -> decrease
Question 73. . If four 10 komega.gif resistors are in series with a single 20 komega.gif resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________.
  1.    increases
  2.    decreases
  3.    remains the same
  4.    drops to zero
 Discuss Question
Answer: Option B. -> decreases
Question 74. . Series components in a series–parallel circuit may be in series with other _______________ components, or with other _______________ components.
  1.    individual, combinations of
  2.    series, parallel
  3.    parallel, series
  4.    shunt, parallel
 Discuss Question
Answer: Option A. -> individual, combinations of
Question 75. . ___ is often used to analyze multiple-source circuits.
  1.    Thevenin's theorem
  2.    Superposition
  3.    Kirchhoff's law
  4.    Ohm's law
 Discuss Question
Answer: Option B. -> Superposition
Question 76. . When a load is connected to a voltage divider, the total resistance of the circuit will ________.
  1.    increase
  2.    decrease
  3.    remain the same
  4.    double
 Discuss Question
Answer: Option B. -> decrease
Question 77. . If a Wheatstone bridge is balanced, its output voltage is ____.
  1.    the same as its input voltage
  2.    very high
  3.    dependent on the unknown resistor value
  4.    equal to 0 V
 Discuss Question
Answer: Option D. -> equal to 0 V
Question 78. . Series components in a series–parallel circuit may be in series with other _______________ components, or with other _______________ components.
  1.    individual, combinations of
  2.    series, parallel
  3.    parallel, series
  4.    shunt, parallel
 Discuss Question
Answer: Option A. -> individual, combinations of
Question 79. . If four 10 komega.gif resistors are in series with a single 20 komega.gif resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________.
  1.    increases
  2.    decreases
  3.    remains the same
  4.    drops to zero
 Discuss Question
Answer: Option B. -> decreases
Question 80. . If a Wheatstone bridge is balanced, its output voltage is ____.
  1.    the same as its input voltage
  2.    very high
  3.    dependent on the unknown resistor value
  4.    equal to 0 V
 Discuss Question
Answer: Option D. -> equal to 0 V

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