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MCQs

Total Questions : 124 | Page 8 of 13 pages
Question 71. The _________ of a recording system is the magnitude of input voltage required to produce a standard deflection in a recorded trace.
  1.    Accuracy
  2.    Linearity
  3.    Sensitivity
  4.    Resolution
 Discuss Question
Answer: Option C. -> Sensitivity
Question 72. Pre amplifier isolation in ECG circuit is to
  1.    Increase input impedance
  2.    Decrease input impedance
  3.    Increase output impedance
  4.    Decrease output impedance
 Discuss Question
Answer: Option A. -> Increase input impedance
Question 73. LVDT windings are wound on
  1.    Steel sheets
  2.    Aluminium
  3.    Ferrite
  4.    Copper
 Discuss Question
Answer: Option C. -> Ferrite
Question 74. The input resistance of a VTVM is about ___________.
  1.    1000 O
  2.    10 kΩ
  3.    20 kΩ
  4.    10 MO
 Discuss Question
Answer: Option D. -> 10 MO
Question 75. When a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called __________.
  1.    Input amplification
  2.    Input differentiation
  3.    Common mode rejection
  4.    Input isolation
 Discuss Question
Answer: Option D. -> Input isolation
Question 76. Piezo electric crystal can produce an emf
  1.    When external mechanical force is applied to i
  2.    When radiant energy stimulates the crystal
  3.    When external magnetic field is applied
  4.    When the junction of two such crystals are heated
 Discuss Question
Answer: Option A. -> When external mechanical force is applied to i
Question 77. A strain gauge is a passive transducer and is employed for converting.
  1.    Mechanical displacement into a change of resistance
  2.    Pressure into a change of resistance
  3.    Force into a displacement
  4.    Pressure into displacement
 Discuss Question
Answer: Option A. -> Mechanical displacement into a change of resistance
Question 78. The most accurate device for measuring voltage is ___________.
  1.    Voltmeter
  2.    Multimeter
  3.    CRO
  4.    VTVM
 Discuss Question
Answer: Option C. -> CRO
Question 79. Photo multiplier consists of
  1.    1 Photo emissive cathode & 2 dynodes
  2.    2 Photo emissive cathodes & 2 dynodes
  3.    2 Photo emissive cathodes & 1 dynode
  4.    1 Photo emissive cathode & 1 dynode
 Discuss Question
Answer: Option A. -> 1 Photo emissive cathode & 2 dynodes
Question 80. For biomedical applications the mostly used amplifier is
  1.    Single ended amplifier
  2.    Differential amplifier
  3.    Inverting operational amplifier
  4.    Chopper amplifier
 Discuss Question
Answer: Option B. -> Differential amplifier

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