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MCQs

Total Questions : 374 | Page 37 of 38 pages
Question 361. To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to
  1.     ± 7.5 %
  2.     ± 20%
  3.     ± 1.5%
  4.     ± 2.5%
 Discuss Question
Answer: Option B. ->  ± 20%
Question 362. The ratio of change in output to the change in the input is called
  1.     precision
  2.     resolution
  3.     sensitivity
  4.     repeatability
 Discuss Question
Answer: Option C. ->  sensitivity
Question 363. A first order instrument is characterized by
  1.     Static sensitivity and time constant
  2.     Static sensitivity and damping coefficient
  3.     Time constant only
  4.     Static sensitivity, damping coefficient and natural frequency of oscillations
 Discuss Question
Answer: Option C. ->  Time constant only
Question 364. The difference between the indicated value and the true value of a quantity is
  1.     Gross error
  2.     Absolute error
  3.     Dynamic error
  4.     Relative error
 Discuss Question
Answer: Option B. ->  Absolute error
Question 365. The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as
  1.     (400 ± 2.24) A
  2.     (400 ± 3) A
  3.     (400 ±5) A
  4.     (400 ± 1) A
 Discuss Question
Answer: Option C. ->  (400 ±5) A
Question 366. Which one the following statements is correct? The application of the instrument in wrong manner in the procedure of measurement results in a/an
  1.     instrument error
  2.     gross error
  3.     systematic error
  4.     random error
 Discuss Question
Answer: Option A. ->  instrument error
Question 367. Two capacitance, C1 = 150 ± 2.4µF and C2 = 120 ± 1.5 µF are connected in parallel. What is the limiting error of the resultant capacitance C (in µF) ?
  1.     3.9µF
  2.     0.9µF
  3.     1.5µF
  4.     2.4µF
 Discuss Question
Answer: Option A. ->  3.9µF
Question 368. Dynamic errors are caused by
  1.     observational error
  2.     human error
  3.     instrument not responding fast
  4.     environmental error
 Discuss Question
Answer: Option C. ->  instrument not responding fast
Question 369. A 0 - 200 V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by this instrument is 50 V. What is the limiting error?
  1.     2%
  2.     4%
  3.     3%
  4.     5%
 Discuss Question
Answer: Option B. ->  4%
Question 370. If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then
  1.     V1 = 300V and V2 = 200V.
  2.     V1 = 0V and V2 = 0V.
  3.     V1 = 250V and V2 = 250V.
  4.     V1 = 200V and V2 = 300V.
 Discuss Question
Answer: Option D. ->  V1 = 200V and V2 = 300V.

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