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Total Questions : 80 | Page 2 of 8 pages
Question 11. In 741 IC, pin number 4 is represented by __________
  1.    Offset null
  2.    Positive input
  3.    Negative input
  4.    Negative supply
 Discuss Question
Answer: Option D. -> Negative supply
Answer: (d).Negative supply
Question 12. For an inverting amplifier positive terminal of input is connected to ____________ of 741 IC.
  1.    Pin number 3
  2.    Pin number 2
  3.    Pin number 1
  4.    Pin number 7
 Discuss Question
Answer: Option B. -> Pin number 2
Answer: (b).Pin number 2
Question 13. Which of the following cannot be treated as a requirement of the instrumentation amplifier?
  1.    Low drift
  2.    Low input impedance
  3.    High linearity
  4.    High CMRR
 Discuss Question
Answer: Option B. -> Low input impedance
Answer: (b).Low input impedance
Question 14. Which of the following is not a characteristic of an ideal op-amp?
  1.    Zero slew rate
  2.    Infinite bandwidth
  3.    Infinite input impedance
  4.    Zero output impedance
 Discuss Question
Answer: Option A. -> Zero slew rate
Answer: (a).Zero slew rate
Question 15. Amplifier with power supply and output circuits galvanically isolated are called ______________
  1.    Differential amplifier
  2.    Isolation amplifier
  3.    Inverting amplifier
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Isolation amplifier
Answer: (b).Isolation amplifier
Question 16. For what purpose, FET’s are included in phase sensitive detectors?
  1.    As SPDT switches, for working with very high frequency signals
  2.    As SPDT switches, for working with very low frequency signals
  3.    As SPST switches, for working with very high frequency signals
  4.    As SPST switches, for working with very low frequency signals
 Discuss Question
Answer: Option B. -> As SPDT switches, for working with very low frequency signals
Answer: (b).As SPDT switches, for working with very low frequency signals
Question 17. Which of the following relation is correct for phase angle and reactive power?
  1.    Reactive power = apparent power ∗ sin θ
  2.    Reactive power = apparent power ⁄ sin θ
  3.    Reactive power = Real power ∗ sin θ
  4.    Reactive power = Real power ⁄ sin θ
 Discuss Question
Answer: Option A. -> Reactive power = apparent power ∗ sin θ
Answer: (a).Reactive power = apparent power ∗ sin θ
Question 18. Which of the following is the expression of power factor?
  1.    cos θ
  2.    sin θ
  3.    tan θ
  4.    sec θ
 Discuss Question
Answer: Option A. -> cos θ
Answer: (a).cos θ
Question 19. Which of the following cannot be used as a unit for frequency?
  1.    Hz
  2.    BPM
  3.    RPM
  4.    S
 Discuss Question
Answer: Option D. -> S
Answer: (d).S
Question 20. What is the relation for phase angle (in degree) of a signal with time delay Δt and frequency f?
  1.    3600∗f.∗ Δt
  2.    1800∗f∗ Δt
  3.    3600 ⁄ (f∗ Δt)
  4.    1800 ⁄ (f∗ Δt)
 Discuss Question
Answer: Option A. -> 3600∗f.∗ Δt
Answer: (a).3600∗f.∗ Δt

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