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Engineering :: Mechanical Measurements


61.  Nitrocellulose cement is used with strain gauge as
A. Base material B. Carrier
C. Adhesive D. Lead
E. None of the above    

62.  Although semi-conductor strain gauges have high gauge factor still these are not preferred due to
A. Non-linearity B. Non-linearity and sensitivity to temperature fluctuations
C. Small size and high cost D. Small size and high cost
E. Difficulties in connections and high cost of auxiliary equipment    

63.  Spot the odd one out
A. Vacuum gauge B. Compound pressure gauge
C. Pirani gauge D. Strain gauge

64.  A strain gauge with high sensitivity and high gauge factor is
A. Nichrome transducer B. Semi-conductor strain gauge transducer
C. Platinum-tungsten alloy transducer D. Stability and dynaloy strain gauge transducer.

65.  For bridge circuit of strain gauge which source of power will be ideal?
A. Low voltage of source B. High voltage dc source
C. Low frequency ac source D. High frequency ac source

66.  Which of the following is not a self-generating transducer?
A. Thermopile B. Ionization chamber
C. Moving coil generator D. Photovoltaic cell
E. All of the above    

67.  Which of the following transducer is preferred for measurements involving sound?
A. Thermocouple B. Volt box
C. Kundt's tube D. Piezoelectric pick up
E. Photoemissive cell    

68.  Ceremets are
A. Resistance elements B. Variable capacitors
C. Ganged condensers D. Defects in transducers
E. Multi-turn potentiometers    

69.  Which of the following torque transducer needs battery or rectified ac source for its operation?
A. Strain gauge B. Differential transformer
C. Variable permeability transducer D. Optical transducer
E. All of the above    

70.  Rosette strain gauges are used for measurement of strain in
A. Horizontal direction only B. Vertical direction only
C. Complex parts




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