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MCQs

Total Questions : 80 | Page 7 of 8 pages
Question 61. Impedance can be measured by connecting an ohm meter across input or output.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 62. Which of the following statement is correct for impedance?
  1.    Time domain ratio of voltage to current
  2.    Time domain ratio of current to voltage
  3.    Frequency domain ratio of voltage to current
  4.    Frequency domain ratio of current to voltage
 Discuss Question
Answer: Option C. -> Frequency domain ratio of voltage to current
Answer: (c).Frequency domain ratio of voltage to current
Question 63. Which of the following scientist was first to represent impedance with complex numbers?
  1.    Arthur Kennelly
  2.    Oliver Heaviside
  3.    Edwin J. Houston
  4.    Edward Victor Appleton
 Discuss Question
Answer: Option A. -> Arthur Kennelly
Answer: (a).Arthur Kennelly
Question 64. What will you call an impedance with a zero phase angle?
  1.    Resistance
  2.    Reactance
  3.    Impedance itself
  4.    Zero impedance
 Discuss Question
Answer: Option A. -> Resistance
Answer: (a).Resistance
Question 65. AC equivalent of resistance is impedance.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 66. Find the initial value of current for which transient current is given by
I(S) = (S²+S) / (5S²+1)
  1.    0
  2.    1
  3.    0.2
  4.    0.5
 Discuss Question
Answer: Option C. -> 0.2
Answer: (c).0.2
Question 67. How many electrons are contributed in one coulomb electric charge?
  1.    6.242 × 10¹⁸
  2.    6.242 × 10¹⁹
  3.    6.242 × 10²⁰
  4.    6.242 × 10¹⁰
 Discuss Question
Answer: Option A. -> 6.242 × 10¹⁸
Answer: (a).6.242 × 10¹⁸
Question 68. What is the purpose of making internal resistance of milli-ammeter very low?
  1.    High sensitivity
  2.    High accuracy
  3.    Minimum voltage drop across meter
  4.    Maximum voltage drop across meter
 Discuss Question
Answer: Option C. -> Minimum voltage drop across meter
Answer: (c).Minimum voltage drop across meter
Question 69. Which of the following devices can be used with both AC and DC?
  1.    PMMC
  2.    Moving iron type
  3.    Moving coil type
  4.    Induction type
 Discuss Question
Answer: Option B. -> Moving iron type
Answer: (b).Moving iron type
Question 70. In a conductor after 1 minute of electron passage, current flown is found to be 1mA. How many electrons would have passed through that conductor?
  1.    4.5×10²⁰
  2.    5×10¹⁷
  3.    3.75×10¹⁷
  4.    3.75×10¹⁸
 Discuss Question
Answer: Option C. -> 3.75×10¹⁷
Answer: (c).3.75×10¹⁷

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