Practice Test: Question Set - 01
1. 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
2. By which of the following the control action is determined when a man walks along a path?
- (A) Brain
- (B) Hands
- (C) Legs
- (D) Eyes
3. As a result of introduction of negative feedback which of the following will not decrease?
- (A) Band width
- (B) Overall gain
- (C) Distortion
- (D) Instability
4. In a control system the output of the controller is given to
- (A) Final control element
- (B) Amplifier
- (C) Comparator
- (D) Sensor
5. A signal other than the reference input that tends to affect the value of controlled variable is known as
- (A) Disturbance
- (B) Command
- (C) Control element
- (D) Reference input
6. In a system low friction coefficient facilitates
- (A) Reduced velocity lag error
- (B) Increased velocity lag error
- (C) Increased speed of response
- (D) Reduced time constant of the system
7. The type-2 system has ________ at the origin.
- (A) No net pole
- (B) Net pole
- (C) Simple pole
- (D) Two poles
8. Addition of zeros in transfer function causes which of the following?
- (A) Lead-compensation
- (B) Lag-compensation
- (C) Lead-lag compensation
- (D) None of the above
9. In pneumatic control systems the control valve used as final control element converts
- (A) Pressure signal to electric signal
- (B) Pressure signal to position change
- (C) Electric signal to pressure signal
- (D) Position change to pressure signal
10. When the initial conditions of a system are specified to be zero it implies that the system is
- (A) At rest without any energy stored in it
- (B) Working normally with reference input
- (C) Working normally with zero reference input
- (D) At rest but stores energy
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