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MCQs

Total Questions : 1634 | Page 160 of 164 pages
Question 1591. Photoelectric pyrometers are suitable in the temperature range of ________________ °C?
  1.    400-1600
  2.    800-1600
  3.    800-2500
  4.    400-1000
 Discuss Question
Answer: Option B. -> 800-1600
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1592. Composition of natural gas is determined by the_________________?
  1.    Haldane apparatus
  2.    Mass spectrometer
  3.    Chromatograph
  4.    Both B. and C.
 Discuss Question
Answer: Option D. -> Both B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1593. Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?
  1.    Mercury thermometer
  2.    Radiation pyrometer
  3.    Bimetallic thermometer
  4.    Thermocouple
 Discuss Question
Answer: Option A. -> Mercury thermometer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1594. Gain margin is equal to the_________________?
  1.    Amplitude ratio
  2.    Reciprocal of amplitude ratio
  3.    Gain in P controller
  4.    Gain in P-I controller
 Discuss Question
Answer: Option B. -> Reciprocal of amplitude ratio
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1595. Thermistors which have a very high temperature co-efficient of resistivity belong to the class of solid called________________?
  1.    Dielectrics
  2.    Insulators
  3.    Semi conductors
  4.    Conductors
 Discuss Question
Answer: Option C. -> Semi conductors
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1596. Silver point temperature is ______________ °C?
  1.    760.5
  2.    860.5
  3.    960.5
  4.    1060.5
 Discuss Question
Answer: Option C. -> 960.5
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1597. Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?
  1.    Tank 1
  2.    Tank 2
  3.    Tank 3
  4.    Tank 4
 Discuss Question
Answer: Option C. -> Tank 3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1598. What is the Laplace transform of sin t ?
  1.    1/(s2 + 1)
  2.    s/(1 + s2)
  3.    1/(s2 – 1)
  4.    s/(s2 – 1)
 Discuss Question
Answer: Option A. -> 1/(s2 + 1)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1599. Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 – 1600°C ?
  1.    Optical pyrometer
  2.    Radiation pyrometer
  3.    Photoelectric pyrometer
  4.    Thermocouples
 Discuss Question
Answer: Option D. -> Thermocouples
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1600. Pyrometry refers to the measurement of temperature_________________?
  1.    With the mercurial thermometer upto 350°C
  2.    Directly
  3.    Which is of higher magnitude
  4.    All A., B. & C.
 Discuss Question
Answer: Option C. -> Which is of higher magnitude
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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