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MCQs

Total Questions : 52 | Page 3 of 6 pages
Question 21. What is ‘live zero’?
  1.    Output zero for zero input
  2.    Output non zero for zero input
  3.    Output null for all input
  4.    Output unpredictable
 Discuss Question
Answer: Option B. -> Output non zero for zero input
Answer: (b).Output non zero for zero input
Question 22. Which of the following is not a fundamental quantity?
  1.    Length
  2.    Angle
  3.    Time
  4.    Luminous intensity
 Discuss Question
Answer: Option B. -> Angle
Answer: (b).Angle
Question 23. Which of the following is caused by careless handling?
  1.    Systematic error
  2.    Gross error
  3.    Random error
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Gross error
Answer: (b).Gross error
Question 24. Which standard is fixed and used for industrial laboratories?
  1.    International standard
  2.    Primary standard
  3.    Secondary standard
  4.    Working standard
 Discuss Question
Answer: Option C. -> Secondary standard
Answer: (c).Secondary standard
Question 25. ‘A system will be error free if we remove all systematic error’.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 26. Which of the following error is caused by poor calibration of the instrument?
  1.    Random error
  2.    Gross error
  3.    Systematic error
  4.    Precision error
 Discuss Question
Answer: Option C. -> Systematic error
Answer: (c).Systematic error
Question 27. Which of the following represents an SI unit of luminous intensity?
  1.    Lumen
  2.    Candela
  3.    Dioptre
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Candela
Answer: (b).Candela
Question 28. Starting position of an object is represented as x=5.1±0.2m and finishing position as y=6.9±0.3m. What will be the displacement and error in displacement?
  1.    Displacement = 1m, Error = 0.5m
  2.    Displacement = 2m, Error = 0.36m
  3.    Displacement = 1.8m, Error = 0.36m
  4.    Displacement = 1.5m, Error = 0.4m
 Discuss Question
Answer: Option C. -> Displacement = 1.8m, Error = 0.36m
Answer: (c).Displacement = 1.8m, Error = 0.36m
Question 29. How systematic errors are eliminated?
  1.    Frequent measurement
  2.    Replacement of instrument
  3.    Finding mean of reading
  4.    Finding variance of reading
 Discuss Question
Answer: Option B. -> Replacement of instrument
Answer: (b).Replacement of instrument
Question 30. Uncertainty in quantity X is given by ΔX. Then what will be the uncertainty in quantity R for which R=c.X?
  1.    |c|.ΔX
  2.    ΔX⁄|c|
  3.    ΔX
  4.    (ΔX)c
 Discuss Question
Answer: Option A. -> |c|.ΔX
Answer: (a).|c|.ΔX

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