STUPIDSID
1(a)
Define the following terms as applied to an electronic instruments:
i) Accuracy ii) Significant figure iii) Resolution.
i) Accuracy ii) Significant figure iii) Resolution.
6 M
1(b)
Draw a basic DC voltmeter circuit,derive expression for multiplier resistance and calculate its value for a voltage range of (0-10)V if a full scale deflection current of 40?A and internal resistance of the meter is 500?.
8 M
1(c)
Explain the working of a true RMS voltmeter with the help of a suitable block diagram
6 M
2(a)
Explain the working of linear ramp type DVM.
8 M
2(b)
Explain the working of a digital frequency meter with the help of a block diagram.
8 M
2(c)
What is 3-1/2 digit DVM? Define its sensitivity.
4 M
3(a)
Draw the basic block diagram of an oscilloscope. Explain the function of each block.
8 M
3(b)
Describe the following modes of operation in a dual trace oscilloscope:
i) alternate mode ii) Chop mode
i) alternate mode ii) Chop mode
8 M
3(c)
What is the role of Time base generator?
4 M
4(a)
Explain the operation of a digital storage oscilloscope with the help of a block diagram. Mention the advantages.
10 M
4(b)
Explain Mesh storage and phosphor storage techniques in storage oscilloscope.
6 M
4(c)
What is sampling oscilloscope? What are its advantages and disadvantages?
4 M
5(a)
What is Barkhausen criteria? Explain with block diagram AF sine-square wave generator.
10 M
5(b)
Explain general pulse characteristic.
4 M
5(c)
Explain working sweep frequency generator.
6 M
6(a)
The Wheatstone bridge is shown in fig.Q6(a) below.The galvanometer has a current sensitivity of 12mm/uA. The internal resistance of galvanometer is 200?, Calculate the deflection of galvanometer cased due to 5? unbalance in the arm AD.
6 M
6(b)
Explain and derive expression for Maxwell's bridge constants are \[C_{1}-0.5\mu f,R-1200\Omega ,R_{2}-700\Omega,R_{3}=300\Omega.\]
8 M
6(c)
Explain Wagner's Earth connection
6 M
7(a)
Explain Resistive position Transducer and a resistance position traducer user a shaft with a stroke of 3 inch. The total resistance of the potentiometer is 5\Omega,. Calculate the output voltage when wiper is 0.9 inch form extreme end if applied voltage is 5V.
8 M
7(b)
Explain construction,principle and operation of LVDT. Show characteristics curves.
6 M
7(c)
What is thermistor? Explain different Forms of thermistors.
6 M
8(a)
Explain in brief effects of photo conductive and photovoltaic transducer.
6 M
8(b)
What is LED and I.C.D in brief.
6 M
8(c)
Write short notes on :
i) RF Power Measurement using Bolometer
ii) Lab view
i) RF Power Measurement using Bolometer
ii) Lab view
8 M
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