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MCQs

Total Questions : 177 | Page 5 of 18 pages
Question 41. What is the relation between capacitance and input impedance?
  1.    directly proportional
  2.    constant
  3.    proportional to square
  4.    inversely proportional
 Discuss Question
Answer: Option A. -> directly proportional
Answer: (a).directly proportional
Question 42. Commonly used thermoelectric transducer is __________
  1.    thermometer
  2.    thermocouple
  3.    linear variable differential transducer
  4.    loud speaker
 Discuss Question
Answer: Option B. -> thermocouple
Answer: (b).thermocouple
Question 43. Composite capacitance consists of _________
  1.    one dielectric medium
  2.    more than one dielectric medium
  3.    five dielectric media
  4.    ten dielectric media
 Discuss Question
Answer: Option B. -> more than one dielectric medium
Answer: (b).more than one dielectric medium
Question 44. Thermoelectric transducer is a __________
  1.    temperature transducer
  2.    pressure transducer
  3.    inductive transducer
  4.    capacitive transducer
 Discuss Question
Answer: Option A. -> temperature transducer
Answer: (a).temperature transducer
Question 45. The algebraic sum of e.m.f.s in a circuit containing thermocouples is __________
  1.    infinite
  2.    hundred
  3.    zero
  4.    ten
 Discuss Question
Answer: Option C. -> zero
Answer: (c).zero
Question 46. Piezoelectric transducer consists of _________
  1.    copper rod
  2.    aluminum wire
  3.    gold crystal
  4.    quartz crystal
 Discuss Question
Answer: Option D. -> quartz crystal
Answer: (d).quartz crystal
Question 47. In kitchen applications a piezoelectric crystal is used for _________
  1.    skimming milk
  2.    lighting a gas stove
  3.    grinding
  4.    mixing
 Discuss Question
Answer: Option B. -> lighting a gas stove
Answer: (b).lighting a gas stove
Question 48. A piezoelectric transducer has a _________
  1.    very high sensitivity
  2.    low sensitivity
  3.    high sensitivity
  4.    zero sensitivity
 Discuss Question
Answer: Option C. -> high sensitivity
Answer: (c).high sensitivity
Question 49. When a compressive force is applied to a quartz crystal then ____________
  1.    positive charges are induced
  2.    negative charges are induced
  3.    no charge is induced
  4.    both positive and negative charges are induced
 Discuss Question
Answer: Option A. -> positive charges are induced
Answer: (a).positive charges are induced
Question 50. A piezoelectric transducer is used as an ignition source for a cigarette.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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