This set of MCQ(multiple choice questions) focuses on the Industrial Automation and Control NPTEL Week 2 Assignment Solutions.
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- 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 2 Assignment Solutions
Q1. A Wheatstone bridge requires a change of 7Ω in the unknown arm of the bridge to produce a change in deflection of 3mm of the galvanometer. What is the Sensitivity?
a) 0.429 mm/Ω
b) 2.333 Ω/mm
c) 2.333 mm/Ω
d) 0.429 Ω/mm
Answer: a) 0.429 mm/Ω
Q2. A thermometer is calibrated 1500 C to 2000 C. The accuracy is specified with in ±0.25 percent. What is the maximum static error: ± ——– 0 C.
Answer: 0.125
Q3. The dead zone in a certain pyrometer is 0.125 percent of span. The calibration is 4000 C to 10000 C. A change of ——- 0 C must occur before it is detected.
Answer: 0.75
Q4. Which one is the example of zero order system?
a) The mercury in the glass thermometer
b) Potentiometer
c) A thermocouple in a thermowell.
d) The mercury in the glass manometer
Answer: b) Potentiometer
Q5. A step input of 5A is applied to an ammeter. The pointer swings to a voltage of 5.18 A and finally comes to rest at 5.02 A. What is the percentage overshoot?
a) 0.16%
b) 0.4%
c) 3.18%
d) 2%
Answer: c) 3.18%
Q6. A continuous time signal for a duration of 4s is uniformly sampled without aliasing and generating a finite length sequence containing 4000 samples, What is the highest frequency component that could be present in the continuous time signal?
a) 2 kHz
b) 1 kHz
c) 0.5 kHz
d) 4 kHz
Answer: c) 0.5 kHz
Q7. A 4 bit DAC produces an output voltage of 5V for an input code 1111. What will be the value of the output voltage for an input code of 0101?
a) 6 V
b) 1.5 V
c) 3 V
d) 1.7 V
Answer: d) 1.7 V
Q8. The full scale output of a 8 bit DAC is 5V. The resolution is:
a) 5 mV
b) 10 mV
c) 2.5 mV
d) 20 mV
Answer: d) 20 mV
Q9. Which of the following ADC is fastest?
a) Flash converter
b) Successive approximation
c) Counter Ramp
d) Dual Slope
Answer: a) Flash converter
Q10. Consider a simple signal processing system shown in figure below:
The sampling periods of the ADC and DAC converters are T1 = 5 ms and T2 = 2 ms respectively. Input to the system is given as: x(t) = 3cos 100Ï€t + 2sin 250Ï€t, then output y(t) is:
a) 3cos(250Ï€t) + 2sin(375Ï€t)
b) 3cos(500Ï€t) + 2sin(750Ï€t)
c) 3cos(250Ï€t) – 2sin(375Ï€t)
d) 3cos(500Ï€t) + 2sin(750Ï€t)
Answer: c) 3cos(250Ï€t) – 2sin(375Ï€t)
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