# Industrial Automation and Control | NPTEL | Week 7 Assignment Solutions

This set of MCQ(multiple choice questions) focuses on the Industrial Automation and Control NPTEL Week 7 Assignment Solutions.

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### Industrial Automation and Control NPTEL Week 7 Assignment Solutions

Q1.

Q2. What is the characteristic of Flasher?

a) Output goes LOW after a time delay when input goes LOW
b) Output alternates between ON and OFF state when input trigger/voltage is applied
c) Output goes LOW automatically after a fixed time duration after input voltage given
d) Output goes HIGH after a time delay after input voltage applied

Q3. What is the difference between Timer and Counter?

a) Timer uses internal clock pulses to increment timing register whereas the Counter uses external pulses for increment
b) Timer uses external pulse for increment and Counter uses internal pulse for increment
c) Timer and Counter both uses internal pulses for increment at regular interval of time
d) Timer and Counter uses external pulses for increment at regular interval of time

Q4. What does the term ‘Accumulated value’ in timer represent and what happens when it is equal/greater than ‘Preset value’?

a) Accumulated value is a number that is set by programmer and when preset value exceeds this accumulated value, then timer status bit is set.
b) Accumulated value represents time based intervals that has been counted since the timer has been energized and status of timer is set when accumulated value crosses preset value.
c) Accumulated value represents the number of times external trigger has been raised by programmer during operation of the timer and nothing happens when it is equal/greater than preset value.
d) Accumulated value represent time based intervals that has been counted since the timer has been energized and timer state does not change when accumulated value is equal/greater that preset value.

Q5. Which of the following is not a type of Timer?

a) Reed
b) Flasher
c) Retentive
d) ON-interval

Industrial Automation and Control NPTEL Week 7 Assignment Solutions

Q6.

Q7. MMI stands for the: ___________.

c) Man – Machine Interface
d) Modern Machine Interface

Industrial Automation and Control NPTEL Week 7 Assignment Solutions

Q8. ____________ is a graphical paradigm for describing modular concurrent control program structure.

b) Run-length limited
c) Programmable Logic Controller
d) Sequential Function Charts

Industrial Automation and Control NPTEL Week 7 Assignment Solutions

Q9. Normally closed contacts in series connection in the ladder diagram represent ___________ in Boolean operation.

a) AND
b) NAND
c) NOR
d) OR

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