Industrial Automation and Control | NPTEL | Week 11 Assignment Solutions

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Industrial Automation and Control NPTEL Week 11 Assignment Solutions

Q1. If speed of a fan is decreased by 50 %, by what percentage does the pressure created by fan decrease?

a) 50%
b) 25%
c) 75%
d) 12.5%

Answer: b) 25%

Q2. A control valve can be divided into actuator and body part. Which of the following is not a sub-part of actuator?

a) Rain cap
b) Eye bolt
c) Spring
d) Seat ring

Answer: d) Seat ring

Q3. Which one of the following fan speed control methods gives pulsating output?

a) Outlet damper control
b) Variable speed drive
c) ON-OFF control
d) Variable speed drive with outlet damper

Answer: b) Variable speed drive

Q4. Which of the following are energy saving methods for fan speed control?
I. ON-OFF control
II. Outlet damper
III. Variable speed drive
IV. Variable speed drive coupled with Outlet damper

a) I, II, III
b) I, III, IV
c) II, III, IV
d) I, II, III, IV

Answer: b) I, III, IV

Q5. Find the ratio of air flow Q2/Q1 and ratio of power requirement HP2/HP1 when fan speed ratio is N2/N1 = 5 (Q: Air flow, N: Fan speed, HP: Power requirement)?

a) 25, 125
b) 25, 25
c) 5, 125
d) 125, 125

Answer: c) 5, 125

Industrial Automation and Control NPTEL Week 11 Assignment Solutions

Q6. Select the correct parts for turning process

a) A – Spindle, B – Workpiece, C – Tool
b) A – Workpiece, B – Tool, C – Spindle
c) A – Workpiece, B – Cutter, C – Spindle
d) A – Spindle, B – Cutter, C – Workpiece

Answer: a) A – Spindle, B – Workpiece, C – Tool

Q7. Match the following

a) A – III, B – II, C – IV
b) A – II, B – III, C – I
c) A – II, B – III, C – IV
d) A – III, B – II, C – I

Answer: b) A – II, B – III, C – I

Industrial Automation and Control NPTEL Week 11 Assignment Solutions

Q8. _________ is process of removing material from rotating work piece.

a) Drilling
b) Milling
c) Programming
d) Turning

Answer: d) Turning

Industrial Automation and Control NPTEL Week 11 Assignment Solutions

Q9. Match the following for the technical features of the CNC machine.

a) A – III, B – I, C – IV
b) A – II, B – III, C – I
c) A – IV, B – I, C – II
d) A – II, B – III, C – IV

Answer: d) A – II, B – III, C – IV

Q10. Match drives with their characteristics:

a) A – III, A – IV, B – I, B – II
b) A – II, A – III, B – I, B – IV
c) A – II, A – IV, B – III, B – I
d) A – I, A – II, B – III, B – IV

Answer: a) A – III, A – IV, B – I, B – II

Industrial Automation and Control NPTEL Week 11 Assignment Solutions

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