Electrical Circuits

221. What is the peak factor for alternating current or voltage varying sinusiodally?

  1. 1.4142
  2. 0.707
  3. 0.636
  4. 1.11

Correct answer: (A)
1.4142

222. What is the peak factor of a triangular wave?

  1. 1.16
  2. 1.73
  3. 1.41
  4. 1.11

Correct answer: (B)
1.73

223. What is the purpose of a load in an electric circuit?

  1. To increase the circuit current
  2. To decrease the circuit current
  3. To utilize electrical energy
  4. To make the circuit complete

Correct answer: (C)
To utilize electrical energy

224. What is the reading of an ohmmeter for a shorted capacitor?

  1. Zero
  2. Infinity
  3. k Ω
  4. M Ω

Correct answer: (A)
Zero

225. What is the reciprocal of capacitance?

  1. Reluctance
  2. Susceptance
  3. Elastance
  4. Conductance

Correct answer: (C)
Elastance

226. What is the reciprocal of quality factor?

  1. Power factor
  2. Reactive factor
  3. Dissipation factor
  4. 1/Q factor

Correct answer: (C)
Dissipation factor

227. What is the resonant frequency of a circuit when L of 25 microhenrys and C of 10 picofarads are in parallel?

  1. 10.1 kHz
  2. 10.1 MHz
  3. 101 MHz
  4. 101 kHz

Correct answer: (B)
10.1 MHz

228. What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?

  1. 14.5 kHz
  2. 145 MHz
  3. 14.5 MHz
  4. 145 kHz

Correct answer: (C)
14.5 MHz

229. What is the rms value of a square wave?

  1. Equals its peak value
  2. Equals its peak-to-peak value
  3. Peak divided by square root of two
  4. Peak divided by pi

Correct answer: (A)
Equals its peak value

230. What is the specific resistance of a pure germanium?

  1. 55 Ω -cm
  2. 55 Ω -m
  3. 55 Ω -mm
  4. 55 kn-m

Correct answer: (A)
55 Ω -cm

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