Lakshya Education MCQs

Question: For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.
Options:
A. True
B. False
Answer: Option A

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More Questions on This Topic :

Question 1. In control systems the output of sensor usually, is
  1.     Analog electrical signal
  2.     Digital electrical signal
  3.     Mechanical signal
  4.     Analog or digital electrical signal
Answer: Option D
Question 2. For type 1 system the velocity lag error is
  1.     Inversely proportional to bandwidth of system
  2.     Directly proportional to gain constant
  3.     Inversely proportional to gain constant
  4.     Independent of gain constant
Answer: Option C
Question 3. Which of the following can be used as a rotating amplifier in a control system?1. amplidyne2. separately excited dc generator3. synchro4. self excited dc generator
  1.     3 and 4
  2.     1 and 2
  3.     1, 2 and 3
  4.     All
Answer: Option B
Question 4. Gain margin and phase margin can be determined from bode plots as well as nyquist plot.
  1.     True
  2.     False
  3.     Both (a) and (b)
  4.     Neither (a) nor (b)
Answer: Option A
Question 5. In bode plots the frequency at which two asymptotes meet is called corner frequency.
  1.     True
  2.     False
  3.     Motor friction and load
  4.     Field resistance
Answer: Option A
Question 6. Robotic manipulator arms mostly use
  1.     Hydraulic actuator
  2.     Pneumatic actuator
  3.     Electric motor actuator
  4.     None of the above
Answer: Option C

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