STUPIDSID
1(a)
Define a zero order system.
2 M
1(b)
What is static and dynamic calibration?
2 M
1(c)
Give two advantages of each
i) Mechanical instruments
ii) Electrical instruments
iii) Electric instruments
i) Mechanical instruments
ii) Electrical instruments
iii) Electric instruments
3 M
Solve any one question from Q.1(d) & Q.1(e)
1(d)
Give differential equation for a general first order system and derive transfer function for it.
7 M
1(e)
Write the general input function for second order system and draw for second order system
i) Frequency response Vs magnitude ratio
ii) Frequency response Vs phase shift.
i) Frequency response Vs magnitude ratio
ii) Frequency response Vs phase shift.
7 M
2(a)
Draw normal distribution curve.
2 M
2(b)
What is regression analysis?
2 M
2(c)
Explain the method to estimate the propagation of error.
3 M
Solve any one question from Q.2(d) & Q.2(e)
2(d)
A force measuring instrument described by the following data.
Resolution - 0.25 n
Range -0-100 N
Linearity - within 0.3 N over range
Repeat ability - within 0.4N over range
Provide an estimate of the uncertainly attributable to this instrument and the instrument design stage uncertainly.
Resolution - 0.25 n
Range -0-100 N
Linearity - within 0.3 N over range
Repeat ability - within 0.4N over range
Provide an estimate of the uncertainly attributable to this instrument and the instrument design stage uncertainly.
7 M
2(e)
How the Gross, systematic, random errors are minimize. Explain RSS method of combining elemental errors.
7 M
3(a)
Draw the Wheatstone Bridge circuit for temperature measurement.
2 M
3(b)
What are Thermistors? Name some of its commercial forms.
2 M
3(c)
What is the working principle of rotameter?
3 M
Solve any one question from Q.3(d) & Q.3(e)
3(d)
Describe the construction and working of a venturimeter. Derive the expression for actual flow rate for in-compressible fluids.
7 M
3(e)
Calculate the temperature sensitivity of a thermistor at 100°C. Its resistivity at 100°C is 1.1Ωm. Express the result in Ωm/k. Take β=4120k at 100°C.
7 M
4(a)
How stress can be measured?
2 M
4(b)
Explain the principle of working of resistance strain gauge.
2 M
4(c)
Draw the diagram of Tachometer generator. Write its two limitations.
3 M
Solve any one question from Q.4(d) & Q.4(e)
4(d)
Explain the method of measuring torque of rotating shafts using strain gauge.
7 M
4(e)
Describe rope brake dynamo meter with the help of a neat sketch. Derive the expression for its power and torque.
7 M
5(a)
Draw the basic structure of a feedback control system.
2 M
5(b)
Compare open and closed loop system.
2 M
5(c)
What is mechanical system? Write down the transfer function for various mechanical system.
3 M
Solve any one question from Q.5(d) & Q.5(e)
5(d)
A system when excited by unit step function input gave the following response
c(t)=1-2e-t+4e-3t
Obtain the transfer function C(s)/R(s)
c(t)=1-2e-t+4e-3t
Obtain the transfer function C(s)/R(s)
7 M
5(e)
For the system whose open-loop transfer function is \[G(s)=\dfrac{10}{s\left ( 0.2+1 \right )} \]
Calculate static error constants Kp, Kv and Ka and obtain steady state error, when system is subjected to an input r(t)=A0+A1t
Calculate static error constants Kp, Kv and Ka and obtain steady state error, when system is subjected to an input r(t)=A0+A1t
7 M
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