1. __ can be used for converting the angular the angular position of a shaft into electrical signal:
a) LVDT
b) Synchros
c) DC Servo motor
d) AC Servo motor
2. Synchros are widely used for transmission of __ data:
a) Angular
b) Digital
c) Mathematical
d) Computed
3. The input to a controller is always a/an __
a) Error
b) Servo
c) Amplifier
d) Sensor
4. The thermocouple directly converts temperature into:
a) dc voltage
b) ac voltage
c) direct current
d) alternating current
5. Potentiometers are used in control systems:
a) To improve frequency response
b) To improve time response
c) To improve stability
d) As error sensing transducer
6. Tachometer is employed to measure
a) Rotational speed
b) Displacement
c) Torque developed
d) Driven shaft speed
7. In a control system the comparator measures the differences between:
a) Output and input
b) Actual and desired performance
c) Controller and system
d) None of the above
8. A signal other than the reference input that tends to affect the value of controlled variable is termed as:
a) Command
b) Error signal
c) Disturbance
d) Actuating signal
9. The weighting function of the control system is called the __ response
a) Impulse
b) Transient
c) Steady state
d) None of the above
10. In a control system the comparator compares the output response and reference input and actuates the:
a) Transducer
b) Signal Conditioner
c) Control element
d) Primary sensing element
