DCS in Thermal Power Plant Multiple Choice Questions and Answers

1. DCS in Thermal power An automated power plant uses

a) Programmable Logic Controller (PLC)

b) Distributed control system (DCS)

c) PLC or DCS

d) none of the mentioned

Answer: PLC or DCS

2. Supervisory Control And Data Acquisition (SCADA) system in a power plant monitors and controls

a) Temperatures, speeds of pumps and motors

b) Open and close valves.

c) Both (a) & (b)

d) none of the mentioned

Answer: Both (a) & (b)

3. A _________ is the heart of a thermal power plant's instrumentation and control systems.

a) Distributed control system

b) Discontinuous controller

c) Continuous Controller

d) none of the mentioned

Answer: Distributed control system

4. The common communication protocols used in DCS include

a) Ethernet

b) HMI

c) Device Net

d) Control net

Answer: HMI

5. When exchanging digital signals between two different control system then (e.g. DCS DO is connected to PLC DI)

a) PLC Side input shall be potential free

b) DCS side output shall be dry (e.g. Relay contact)

c) Relay doesn’t help

b) Both options (a) and (b)

Answer: DCS side output shall be dry (e.g. Relay contact)