Computer Aided Manufacturing (2171903) MCQs

MCQs of Programmable Logic Controllers

Showing 1 to 10 out of 35 Questions
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1.

The acronym PLC stands for:

(a)

Pressure Load Control
(b)

Programmable Logic Controller
(c)

Pneumatic Logic Capstan
(d)

Pressure Loss Chamber
Answer:

Option (b)

2.

When ___________ contacts are actuated, they disrupt the power supply through them.

(a)

normally open type
(b)

normally closed type
(c)

normally open and closed type
(d)

none of the mentioned
Answer:

Option (b)

3.

Normally open contacts are open

(a)

when input is not energized
(b)

when input is energized
(c)

when input is higher than 20 volts
(d)

none of the mentioned
Answer:

Option (a)

4.

HMI Means ____________Machine Interface.

(a)

High
(b)

Heart
(c)

Human
(d)

Hard
Answer:

Option (c)

5.

The main difference between online and offline PLC programming is

(a)

whether the programming pc has internet connectivity
(b)

where the edited program resides
(c)

whether the PLC is running or stopped
(d)

the type of program used
Answer:

Option (b)

6.

To increase the number of inputs and outputs of the PLC, one can use expansion modules.

(a)

True
(b)

False
(c)

None of the mentioned
Answer:

Option (a)

7.

A solenoid is an example of an output device.

(a)

True
(b)

False
(c)

None of the mentioned
Answer:

Option (a)

8.

The type of memory which is fast and temporarily stores the data which are immediately required for use is called as______.

(a)

HDD
(b)

ROM
(c)

RAM
(d)

SSD
Answer:

Option (c)

9.

How is the speed of operation of the conventional relay system compared to digital controllers?

(a)

Very slow
(b)

Very fast
(c)

Same
(d)

Almost similar
Answer:

Option (a)

10.

The capability of convention relay systems for complex operations is ___________ that of the PLCs.

(a)

excellent than
(b)

poor than
(c)

as good as
(d)

unpredictable as
Answer:

Option (b)

Showing 1 to 10 out of 35 Questions
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