Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 4th Semester (Fourth Semester) 2014-15 Electronic Instrumentation And Measurements Question Paper
lllllljllllsllllljlllllllll!||II3|||||!|| EEC-403
(FollowingPaper ID and Roll No. to be ?lled in your Answer Book)
PAPER ID : 131403
Roll No.
B. Tech.
(SEM. IV) THEORY EXAMINATION, 2014-15
ELECTRONIC INSTRUMENTATION AND
MEASUREMENTS
Time : 3 Hours] [Total Marks : 100
Note : (I) Attempt rill questions .
(2) All questions carry equal marks.
1 Attempt any four parts of the following : SX4=20
a) Determine the dimensions of Magnetic Flux density,
Electric ?eld Strength. Explain the absolute error and
GTOSS error.
b) Current was measured during a test as 30.4A, ?owing
in a resistor of 0.105 9 It was discovered later that
the ammeter reading was low by 1.2 percent and the
marked resistance was high by 0.3 percent, Find the
true power as a percentage of the power that was
originally calculated.
c) Explain the construction and working of Galvanometer.
d) What is the e??ect' of temperature change in Ammeter
and Voltmeter? How can we minimize the temperature
e??ect-in Ammeter and Voltmeter??
131403] ' 1 - [ Contd...
a)
b)
c)_?
d),
a)
13)
131403]
A PMMC instrument has a three resistor ayrton shunt
connected across it to make an ammeter.? The resistance
values are 0.05 9, 0.45 (2 and 4.5 Q. The meter
resistance is 1 K9 and FSD is 50p.A. Calculate the
three ranges of ammeter.
How can we measure unknown resistance using Serie
Ohmmeter? - , ?
Attempt any four parts of the following : 5X4=20
Draw and explain ?the circuit diagram of Voltage to
current converter with full wave recti?er AC electronic
Voltmeters.
Explain the working of FET Input Voltmeter with its
circuit diagram.
Draw and explain the block diagram 'of the Ramp Type
DVM with its system waveform.
What are the two methods of measuring current using
high current probes of multimeter?
Compare Digital and Analog Multimeter. Explain the
concept of Burden Voltage.
A digital frequency meter has a time base derived from
ZMI-Iz clock generator frequency divided by decade
counters. Determine the measured :frequency when
3.524 kHz sine wave is applied and when the time
bases uses i) Six - decade counters ii) four decade
counters.
Attempt any two parts of the following : 10x2=20
Explain the working of Q-meter. What is the measuring
procedure for high impedance measurement in Q-meter?
Explain the Kelvin Bridge for unknown resistance
measurement method. A wheat stone bridge has
2 [ Contd...
P= 3.5KQ, Q=7KQ and S = 4K9 when R= 2K0.
Resistors are arranged in such a way that the bridge
is in balanced condition. The supply voltage is 10V and
galvanometer has a current sensitivity of 1 pA/mm and
its resistance is 2.5K (2. Calculate the minimum change
in IR Which is detectable by the bridge.
c) Write short note on :
i. Series resistance Capacitance Bridge also draws
its phasor diagram.
ii. Hay Inductance Bridge and its application.
Attempt any two parts of the following : 10X2=20
a) Draw the block diagram of automatic time base of
oscilloscope. Show the waveforms and explain its
operation.
b) write a short note on
1) D80 operation
ii) 1:1 oscilloscope probes.
c) Draw and explain the block diagram of Delayed- time-
base (DTB) system, Show the system waveforms.
Attempt any two parts of the fa?owing : 10xz=20
a) Draw and explain the circuits for calibration of d.c.
voltmeter and wattmeter with standard instruments.
b) Describe with the help of block diagram the operation
of X-Y recorder. Also list the application of X-Y
recorder.
c) Write a short note on
i. Galvanometn'c strip chart recorders
ii. Plotters.
131403] ' 3 [2475]
This post was last modified on 29 January 2020