Questions and answers for exam Preparation

MCQs

Total Questions : 1634 | Page 158 of 164 pages

Question 1571. Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

Enhancement or attenuation of radiation occurs in the sighting path
Object and surrounding are at almost the same temperature
Object has varying emissivity
Object is transparent

Discuss Question

Answer: Option B. -> Object and surrounding are at almost the same temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1572. Thermodynamic Celsius scale of temperature measurement is________________?

Defined on the basis of melting point of ice and evaporation temperature of water vapor
Defined on the basis of melting point of ice and condensation temperature of water vapor
Having an interval of 100° between ice point to steam point
Both B. and C.

Discuss Question

Answer: Option D. -> Both B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1573. Bourdon gauges are used for measuring pressure (kg/cm2) ?

< atmospheric
> 2 (gauge)
10 (absolute)

Discuss Question

Answer: Option B. -> > 2 (gauge)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1574. Radiation pyrometers as compared to thermocouples____________________?

Has a slower speed of response
Can measure higher temperature
Can’t measure the temperature of moving objects
Is more affected by corrosive atmosphere

Discuss Question

Answer: Option B. -> Can measure higher temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1575. Routh test_________________?

Criterion provides information about the actual location of roots
Cannot be used to test the stability of a control system containing transportation lag
Criterion is not applicable to systems with polynomial characteristic equation
Cannot determine as to how many roots of the characteristics equation have positive real roots

Discuss Question

Answer: Option B. -> Cannot be used to test the stability of a control system containing transportation lag
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1576. A stable system is the one___________________?

For which the output response is bounded for all bounded input
Which exhibits an unbounded response to a bounded input
Which satisfies the conditions for a servo problem
None of these

Discuss Question

Answer: Option A. -> For which the output response is bounded for all bounded input
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1577. Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an___________________?

Orsat apparatus
Thermal conductivity cell
Zirconia probe
Chromatograph

Discuss Question

Answer: Option B. -> Thermal conductivity cell
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1578. Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?