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MCQs

Total Questions : 227 | Page 21 of 23 pages
Question 201. Who invented the first junction transistor?
  1.    Shockley
  2.    Fisher
  3.    Smith
  4.    None of these
  5.    Gomes
 Discuss Question
Answer: Option A. -> Shockley
Question 202. When a series RLC circuit is operating at its resonant frequency:
  1.    the difference between inductive and capacitive reactance is equal to the resistance
  2.    capacitive reactance is greater than the inductive reactance
  3.    inductive reactance is equal to the capacitive reactance
  4.    inductive reactance is greater than the capacitive reactance
  5.    None of these
 Discuss Question
Answer: Option C. -> inductive reactance is equal to the capacitive reactance
Question 203. Thevenin theorem replaces a complicated circuit facing a load by an
  1.    Ideal current source and parallel resistor
  2.    Ideal voltage source and series resistor
  3.    Ideal current source and series resistor
  4.    None of these
  5.    Ideal voltage source and parallel resistor
 Discuss Question
Answer: Option B. -> Ideal voltage source and series resistor
Question 204. The total capacitive reactance of a parallel capacitor circuit is:
  1.    equal to the sum of the individual capacitance values
  2.    None of these
  3.    equal to the source voltage divided by total current
  4.    less than the capacitance value of the smallest capacitor
  5.    equal to the sum of the individual capacitive-reactance values
 Discuss Question
Answer: Option C. -> equal to the source voltage divided by total current
Question 205. Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating?
  1.    R = E2/P
  2.    I = P/E
  3.    P = PR
  4.    None of these
  5.    P = E2/R
 Discuss Question
Answer: Option A. -> R = E2/P
Question 206. Norton's theorem replaces a complicated circuit facing a load by an
  1.    Ideal current source and series resistor
  2.    Ideal current source and parallel resistor
  3.    None of these
  4.    Ideal voltage source and parallel resistor
  5.    Ideal voltage source and series resistor
 Discuss Question
Answer: Option B. -> Ideal current source and parallel resistor
Question 207. Which one of the following statements applies to common, non-rechargeable flashlight batteries?
  1.    Common flashlight batteries are primary dry-cell batteries
  2.    Common flashlight batteries are primary wet-cell batteries
  3.    Common flashlight batteries are secondary wet-cell batteries
  4.    Common flashlight batteries are secondary dry-cell batteries
  5.    None of these
 Discuss Question
Answer: Option A. -> Common flashlight batteries are primary dry-cell batteries
Question 208. The total inductive reactance of a parallel inductor circuit is:
  1.    None of these
  2.    equal to the sum of the individual inductance values
  3.    less than the inductance value of the smallest inductor
  4.    equal to the sum of the individual inductive-reactance values
  5.    equal to the source voltage divided by total current
 Discuss Question
Answer: Option E. -> equal to the source voltage divided by total current
Question 209. A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage?
  1.    12 V
  2.    24 V
  3.    None of these
  4.    18 V
  5.    30 V
 Discuss Question
Answer: Option B. -> 24 V
Question 210. What kind of device is a diode?
  1.    Unipolar
  2.    None of these
  3.    Nonlinear
  4.    Bilateral
  5.    Linear
 Discuss Question
Answer: Option C. -> Nonlinear

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