Sail E0 Webinar

MCQs

Total Questions : 94 | Page 2 of 10 pages
Question 11. In differential-mode, ___________
  1.    opposite polarity signals are applied to the inputs
  2.    the gain is one
  3.    the outputs are of different amplitudes
  4.    only one supply voltage is used
 Discuss Question
Answer: Option A. -> opposite polarity signals are applied to the inputs
Question 12. The differential gain is
  1.    very high
  2.    very low
  3.    dependent on input voltage
  4.    about 100
 Discuss Question
Answer: Option A. -> very high
Question 13. Assume that the OP-amp of the fig. is ideal. If Vi is a triangular wave, then V0 will be
  1.    Square wave
  2.    Triangular wave
  3.    Parabolic wave
  4.    Sine wave
 Discuss Question
Answer: Option D. -> Sine wave
Question 14. When a number of stages are connected in parallel, the overall gain is the product of the individual stage gains
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 15. For an ideal OP-amp, which of the following is true?
  1.    The differential voltage across the input terminals is zero
  2.    The current into the input terminals is zero
  3.    The current from output terminal is zero
  4.    The output resistance is zero
 Discuss Question
Answer: Option C. -> The current from output terminal is zero
Question 16. The OP-amp can amplify
  1.    c. signals only
  2.    d.c. signals only
  3.    both a.'and d.'signals
  4.    neither 'c. nor a.c. signals
 Discuss Question
Answer: Option C. -> both a.'and d.'signals
Question 17. In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is
  1.    23dB
  2.    25dB
  3.    46dB
  4.    50dB
 Discuss Question
Answer: Option C. -> 46dB
Question 18. When a differential amplifier is operated single-ended, ___________
  1.    the output is grounded
  2.    one input is grounded and signal is applied to the other
  3.    both inputs are connected together
  4.    the output is not inverted
 Discuss Question
Answer: Option B. -> one input is grounded and signal is applied to the other
Question 19. Negative feedback ___________
  1.    increases the input and output impedances
  2.    increases the input impedance and bandwidth
  3.    decreases the output impedance and bandwidth
  4.    does not affect impedance or bandwidth
 Discuss Question
Answer: Option B. -> increases the input impedance and bandwidth
Question 20. A voltage follower ___________
  1.    has a voltage gain of 1
  2.    is noninverting
  3.    has no feedback resistor
  4.    has all of these
 Discuss Question
Answer: Option D. -> has all of these

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

DSP Combined 1 Free Revision Test SAIL JO E-0
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
BSP Plant Specific Review Test SAIL JO E-0
BSL Combined 1 Free Revision Test SAIL JO E-0
GFM Combined 1 Free Revision Test SAIL JO E-0