4Th Class Power Engineering Chapter 84

Front 1

The means commonly used as a medium of control in a plant include analog, digital, mechanical, pneumatic and:

1) Manual

2) Magnetic

3) Thermal

4) Electrical

5) Physical

Back 1

Electrical

Front 2

A current signal is also called a/an:

1) Ampere signal

2) AC signal

3) Generated signal

4) Power signal

5) DC signal

Back 2

DC signal

Front 3

1 PSI equals:

1) 1 kilogram per metre squared

2) 100 kPa

3) 1 kPa

4) 1 Newton per metre squared

5) 6.89 kPa

Back 3

6.89 kPa

Front 4

A control loop controller:

1) Does not require a set point value

2) Will always eliminate deviation

3) Measures the manipulated variable value, eliminating the need of a primary element

4) Sends a signal to a primary element

5) Constantly compares input signals to the set point

Back 4

Constantly compares input signals to the set point

Front 5

Some of the components required to construct an automatic control loop are a sensing element, a transmitter, a _____ and a control valve.

1) Piping system

2) Controller

3) Transducer

4) Transformer

5) Converter

Back 5

Controller

Front 6

A sensing element receives its signal from the:

1) Recorder

2) Control valve

3) Controlled variable

4) Transducer

5) Controller

Back 6

Controlled variable