Engineering :: Mechanical Measurements
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61. |
Nitrocellulose cement is used with strain gauge as |
A. |
Base material |
B. |
Carrier |
C. |
Adhesive |
D. |
Lead |
E. |
None of the above |
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Answer: Option C
Explanation:
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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 |
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Answer: Option B
Explanation:
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63. |
Spot the odd one out |
A. |
Vacuum gauge |
B. |
Compound pressure gauge |
C. |
Pirani gauge |
D. |
Strain gauge |
Answer: Option D
Explanation:
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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. |
Answer: Option B
Explanation:
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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 |
Answer: Option D
Explanation:
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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 |
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Answer: Option B
Explanation:
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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 |
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Answer: Option D
Explanation:
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68. |
Ceremets are |
A. |
Resistance elements |
B. |
Variable capacitors |
C. |
Ganged condensers |
D. |
Defects in transducers |
E. |
Multi-turn potentiometers |
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Answer: Option A
Explanation:
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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 |
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Answer: Option E
Explanation:
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70. |
Rosette strain gauges are used for measurement of strain in |
A. |
Horizontal direction only |
B. |
Vertical direction only |
C. |
Complex parts |
Answer: Option C
Explanation:
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