This set of MCQ(multiple choice questions) focuses on the Industrial Automation and Control NPTEL Week 10 Assignment Solutions.
Course Layout
- Week 0: Assignment Solution
- Week 1: Assignment Solution
- Week 2: Assignment Solution
- Week 3: Assignment Solution
- Week 4: Assignment Solution
- Week 5: Assignment Solution
- Week 6: Assignment Solution
- Week 7: Assignment Solution
- Week 8: Assignment Solution
- Week 9: Assignment Solution
- Week 10: Assignment Solution
- Week 11: Assignment Solution
- Week 12: Assignment Solution
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Industrial Automation and Control NPTEL Week 10 Assignment Solutions
Q1. Which of the following is a type of power source in hydraulic system?
a) Pump
b) Strainer
c) Control valve
d) Cylinder
Answer: a)
Q2. Which of the following is the definition of pressure reducing valves?
a) Pressure reducing valve is designed to open at a predetermined pressure to redirect high volume of excess fluid to reservoir
b) Pressure reducing valve remain open and adjust pressure continuously
c) Pressure reducing valves are generally closed and used to maintain pressure in a circuit at certain portions
d) Pressure reducing valves maintain sequence of pressure and are two-way normally closed valves
Answer: a)
Q3. In the given regenerative reciprocating circuit(extension stroke), derive the expressions for V1 and V2 in terms of V and k. Here k=v1/v1-v2. A and a are piston surface and rod cross-section areas, respectively.
a) V1 = kV, V2 = (k + 1)V
b) V1 = (k – 1)V, V2 = (k + 1)V
c) V1 = kV, V2 = (k – 1)V
d) V1 = kV, V2 = (k + 2)V
Answer: c)
Q4. In the shown regenerative reciprocating circuit(retracting stroke), find the V1 in terms of V, a, A. Here, a and A are rod cross-section and piston areas, respectively.
a) V1 = V/A-a
b) V1 = AV/A-a
c) V1 = (A+a)V/A-a
d) V1 = V/A+a
Answer: b)
Q5. Find the ratio A/a where A is piston area and a is rod cross-section area for a regenerative reciprocating circuit when extraction speed is 3 time to that of retraction speed.
a) A/a = 4
b) A/a = 2.5
c) A/a = 2
d) A/a = 3
Answer: d)
Q6. __________ system is preferred to use in explosive environment.
a) Hydraulic
b) Electrical
c) Pneumatic
d) All of the above
Answer: c)
Q7. Which one is pneumatic control element?
a) Compressor
b) Cylinder
c) Check valve
d) Directional valve
Answer: d)
Q8. Match the following
| A. Compressor | I. Reservoir |
| B. Accumulator | II. Cylinder |
| C. Actuator | III. Pressure source |
| IV. Filter |
a) A – II, B – III, C – IV
b) A – III, B – II, C – I
c) A – III, B – I, C – IV
d) A – III, B – I, C – II
Answer: d)
Q9. Which one is considered as medium pressure air compressor?
a) 150 – 1000 PSI
b) 200 – 1200 PSI
c) 50 – 10000 PSI
d) 500 – 1500 PSI
Answer: a)
Q10. Air storage capacity: _______
Fill the blank with suitable option.
a) Pressure x Area
b) Pressure / Area
c) Pressure / Volume
d) Pressure x Volume
Answer: d)
Q11. The shuttle valve is also known as ____________ logic valve.
a) AND
b) OR
c) NOR
d) NAND
Answer: b)
Q12. Time response of a typical small chamber cylinder is:
a) Undamped
b) Underdamped
c) Critically damped
d) Overdamped
Answer: b)
Q13. In typical kind of torque speed characteristics for pneumatic motors, with the increase in speed, torque will:
a) increase
b) decrease
c) initially increase then decrease
d) remain constant
Answer: b)
Q14. In Pneumatic system, AND gate is also known as:
a) Shuttle valve
b) Check valve
c) Memory valve
d) Dual pressure valve
Answer: d)
Q15. Pneumatic actuators are _______ in speed and ________ in size than Solenoid actuators.
a) faster, larger
b) slower, bigger
c) slower, smaller
d) faster, smaller
Answer: b)
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