# Industrial Automation and Control | NPTEL | Week 2 Assignment Solutions

This set of MCQ(multiple choice questions) focuses on the Industrial Automation and Control NPTEL Week 2 Assignment Solutions.

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### Industrial Automation and Control NPTEL Week 2 Assignment Solutions

Q1. A Wheatstone bridge requires a change of 7Î© in the unknown arm of the bridge to produce a change in deflection of 3mm of the galvanometer. What is the Sensitivity?

Q2. A thermometer is calibrated 1500 C to 2000 C. The accuracy is specified with in Â±0.25 percent. What is the maximum static error: Â± ——– 0 C.

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.

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

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%

Industrial Automation and Control NPTEL Week 2 Assignment Solutions

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

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

Industrial Automation and Control NPTEL Week 2 Assignment Solutions

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

Industrial Automation and Control NPTEL Week 2 Assignment Solutions

Q9. Which of the following ADC is fastest?

a) Flash converter
b) Successive approximation
c) Counter Ramp
d) Dual Slope

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)