Code: A - 12
Subject: INSTRUMENTATION & MEASUREMENT
Time: 3 Hours
Max. Marks: 100
NOTE: There are 11 Questions in all.  
  • Question 1 is compulsory and carries 16 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.
  • Answer any THREE Questions each from Part I and Part II. Each of these questions carries 14 marks.
  • Any required data not explicitly given, may be suitably assumed and stated.
Q.1 Choose the correct or best alternative in the following: (2x8)
   
a.
The LVDT is primarily used for the measurement of
  (A) displacement.       (B) velocity.
(C) acceleration.        (D) humidity.
 
   
b.
The gauge factor of a bonded - wire strain gauge is approximately
  (A) 4.         (B) 3.
(C) 2.         (D) 1.
 
c.
 The bridge used for measurement of high - Q inductors is
  (A) Maxwell's bridge.        (B) Schering's bridge.
(C) Hay's bridge.               (D) Wien's bridge.
 
d.
 The material widely used for the production of electric potential by means of stress is
  (A) Platinum.    (B) Gold.
(C) Silver.        (D) Quartz.
   
e.
 Digital instruments have an input impedance of the order of
  (A) ohm.          (B) mega ohm.
(C) kilo ohm.    (D) milli - ohm.

   
f.
 Which of the following analog to digital converters has a conversion time proportional to the analog voltage :
  (A) counter type                      (B) dual - slope integrator
(C) successive approximation  (D) comparator type
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