Control Systems Unit test Quiz-1

Control system that does not use feedback is called a:

• Closed loop system

• Open loop system

• Feedback control system

• Manual system

Which of the following is an example of a closed loop system?

• Electric iron

• Air conditioner with thermostat

• Electric kettle

• Room heater without feedback

Which type of control system provides automatic correction of error?

• Open loop

• Closed loop

• Manual control

• Feedforward

The accuracy of an open loop system is:

• High

• Low

• Depends on input

• Depends on output

A traffic light controller is an example of:

• Open loop system

• Closed loop system

• Adaptive system

• None of the above

Which is NOT a characteristic of open loop system?

• Feedback exists

• Less accurate

• Simple design

• Cheaper

The main advantage of a closed loop system is:

• Simplicity

• Accuracy and stability

• Cost effectiveness

• None

Closed loop systems are generally:

• Less accurate

• Open loop systems with sensors

• Systems with feedback

• Non-corrective

Which block in a closed loop system compares input and output?

• Comparator

• Controller

• Amplifier

• Transducer

In electrical analogy, mechanical force corresponds to:

• Voltage

• Current

• Torque

• Resistance