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MCQs

Total Questions : 2104 | Page 209 of 211 pages
Question 2081. For a superconductor, magnetisation M in a field H isFor A Superconductor, Magnetisation M In A Field H Is
  1.    extremely small
  2.    - H
  3.    - I
  4.    zero
 Discuss Question
Answer: Option B. -> - H
Answer: (b).- H
Question 2082. A sinusoidal voltage has peak to peak value of 100 V. The rms value isA Sinusoidal Voltage Has Peak To Peak Value Of 100 V. The Rm...
  1.    50 V
  2.    70.7 V
  3.    35.35 V
  4.    141.41 V
 Discuss Question
Answer: Option C. -> 35.35 V
Answer: (c).35.35 V
Question 2083. The expression for the resonant frequency ω0 in the circuit shownThe Expression For The Resonant Frequency ω0 In The Circuit...
  1.    A
  2.    B
  3.    C
  4.    D
 Discuss Question
Answer: Option B. -> B
Answer: (b).B
Question 2084. A capacitor is needed for an ac circuit of 230 V, 50 Hz the peak voltage rating of the capacitor should beA Capacitor Is Needed For An Ac Circuit Of 230 V, 50 Hz The ...
  1.    230 V
  2.    0.5 x 230 V
  3.    2 x 230V
  4.    230/2V
 Discuss Question
Answer: Option C. -> 2 x 230V
Answer: (c).2 x 230V
Question 2085. A 0.5 μF capacitor is connected across a 10 V battery. After a long time, the circuit current and voltage across capacitor will be
  1.    0.5 A and 0 V
  2.    0 A and 10 V
  3.    20 A and 5 V
  4.    0.05 A and 5 V
 Discuss Question
Answer: Option B. -> 0 A and 10 V
Answer: (b).0 A and 10 V
Question 2086. A capacitor stores 0.15C at 5 V. Its capacitance is
  1.    0.75 F
  2.    0.75 μF
  3.    0.03 F
  4.    0.03 μF
 Discuss Question
Answer: Option C. -> 0.03 F
Answer: (c).0.03 F
Question 2087. For making a capacitor, the dielectric should have
  1.    high ∈ᵣ
  2.    low ∈ᵣ
  3.    ∈ᵣ = 1
  4.    ∈ᵣ neither too high nor too low
 Discuss Question
Answer: Option A. -> high ∈ᵣ
Answer: (a).high ∈ᵣ
Question 2088. An RLC series circuit has Q = 100 and ω₀ = 20 rad/sec. The bandwidth is
  1.    0.2 rad/sec
  2.    2 rad/sec
  3.    20 rad/sec
  4.    2000 rad/sec
 Discuss Question
Answer: Option A. -> 0.2 rad/sec
Answer: (a).0.2 rad/sec
Question 2089. In an unloaded transformer, the fluxes limiting the primary and secondary are 30 mWb and 20 mWb. The coefficient of coupling is
  1.    1
  2.    0.1
  3.    0.33
  4.    0.67
 Discuss Question
Answer: Option D. -> 0.67
Answer: (d).0.67
Question 2090. Heat in calories = I²Rt/4.186.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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