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MCQs

Total Questions : 480 | Page 15 of 48 pages
Question 141. A transistor has how many doped regions?
  1.    1
  2.    2
  3.    3
  4.    4
  5.    None of the above
 Discuss Question
Answer: Option C. -> 3
Question 142. The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values?
  1.    0.93 W
  2.    0.93 V
  3.    1:00 AM
  4.    9.3 W
  5.    None of the above
 Discuss Question
Answer: Option A. -> 0.93 W
Question 143. A loadstone is:
  1.    a natural magnet
  2.    a temporary magnet
  3.    an artificial magnet
  4.    a paramagnetic alloy
  5.    None of the above
 Discuss Question
Answer: Option A. -> a natural magnet
Question 144. Which one of the following phrases most accurately describes a purely capacitive circuit?
  1.    Resistances provide the only opposition to current flow
  2.    Capacitive reactance provides the only opposition to current flow
  3.    The ac voltage leads the current by 90 degree
  4.    Combinations of resistance and capacitive reactance provide any opposition to current flow
  5.    None of the above
 Discuss Question
Answer: Option B. -> Capacitive reactance provides the only opposition to current flow
Question 145. The saturation point is approximately the same as
  1.    cutoff point
  2.    lower end of the load line
  3.    upper end of the load line
  4.    infinity
  5.    None of the above
 Discuss Question
Answer: Option C. -> upper end of the load line
Question 146. Which one of the following statements is true for the currents in a series RC circuit?
  1.    The current always has the same amplitude and phase for every part of the circuit
  2.    The total current is equal to the sum of the currents for the resistance and capacitance
  3.    The total current is greater than the sum of the currents for the resistance and capacitance
  4.    The total current is less than the sum of the currents for the resistance and capacitance
  5.    None of the above
 Discuss Question
Answer: Option A. -> The current always has the same amplitude and phase for every part of the circuit
Question 147. The total inductance of a series inductor circuit is:
  1.    equal to the sum of the individual inductance values
  2.    equal to the sum of the individual inductive-reactance values
  3.    less than the value of the smallest inductor
  4.    equal to the source voltage divided by total current
  5.    None of the above
 Discuss Question
Answer: Option A. -> equal to the sum of the individual inductance values
Question 148. Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold
  1.    220 Ohm, 5%
  2.    220 Ohm, 10%
  3.    22,000 Ohm, 5%
  4.    22, 000 Ohm, 10%
  5.    None of the above
 Discuss Question
Answer: Option C. -> 22,000 Ohm, 5%
Question 149. Which one of the following is most likely used for measuring the rate of electron flow?
  1.    Voltmeter
  2.    Ammeter
  3.    Wattmeter
  4.    Ohmmeter
  5.    None of the above
 Discuss Question
Answer: Option B. -> Ammeter
Question 150. Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?
  1.    20 Ohm
  2.    30 Ohm
  3.    10 Ohm
  4.    100 Ohm
  5.    None of the above
 Discuss Question
Answer: Option A. -> 20 Ohm

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