Q. A control system working under unknown random action is called

  • (A) computer control system
  • (B) digital data system
  • (C) stochastic control system
  • (D) adaptive control system
πŸ’¬ Discuss
βœ… Correct Answer: (C) stochastic control system

Q. The first order control system, which is is well designed, has a

  • (A) small bandwidth
  • (B) negative time constant
  • (C) large negative transfer function pole
  • (D) none of the above
πŸ’¬ Discuss
βœ… Correct Answer: (C) large negative transfer function pole

Q. Zero-order hold used in practical reconstruction of continuous-time signals is mathematically represented as a weighted-sum of rectangular pulses shifted by:

  • (A) any multiples of the sampling interval
  • (B) integer multiples of the sampling interval
  • (C) one sampling interval
  • (D) 1 second intervals
πŸ’¬ Discuss
βœ… Correct Answer: (B) integer multiples of the sampling interval

Q. Sampling can be done by:

  • (A) impulse train sampling
  • (B) natural sampling
  • (C) flat-top sampling
  • (D) all of the mentioned
πŸ’¬ Discuss
βœ… Correct Answer: (D) all of the mentioned

Q. The first step required to convert analog signal to digital is :

  • (A) sampling
  • (B) holding
  • (C) reconstruction
  • (D) quantization
πŸ’¬ Discuss
βœ… Correct Answer: (A) sampling

Q. Sampling is necessary :

  • (A) in complex control systems
  • (B) where high accuracy is required
  • (C) non automated control systems
  • (D) automated control system
πŸ’¬ Discuss
βœ… Correct Answer: (B) where high accuracy is required

Q. _______________ is a sampling pattern which is repeated periodically

  • (A) single order sampling
  • (B) multi order sampling
  • (C) zero order sampling
  • (D) unordered sampling
πŸ’¬ Discuss
βœ… Correct Answer: (B) multi order sampling

Q. Aliasing is caused when:

  • (A) sampling frequency must be equal to the message signal
  • (B) sampling frequency must be greater to the message signal
  • (C) sampling frequency must be less to the message signal
  • (D) sampling frequency must be greater than or equal to the message signal
πŸ’¬ Discuss
βœ… Correct Answer: (C) sampling frequency must be less to the message signal

Q. The signal is reconstructed back with the help of

  • (A) zero order hold circuits
  • (B) extrapolations
  • (C) signal is reconstructed with zero order holds and extrapolations
  • (D) signal is not reconstructed
πŸ’¬ Discuss
βœ… Correct Answer: (C) signal is reconstructed with zero order holds and extrapolations

Q. A control system working under unknown random actions is called ---

  • (A) computer control system
  • (B) digital data system
  • (C) stochastic control system
  • (D) adaptive control system
πŸ’¬ Discuss
βœ… Correct Answer: (C) stochastic control system

Jump to