Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is
A. Water
B. Carbon tetrachloride
C. Paraffin
D. Ethylene glycol
Answer: Option C
A. Water
B. Carbon tetrachloride
C. Paraffin
D. Ethylene glycol
Answer: Option C
Phase lag of the frequency response of a second order system to a sinusoidal forcing function
A. Is 30°
B. Is 90° at the most
C. Approaches 180° asymptotically
D. Is 120°
Which of the following is not classified as a thermo electric pyrometer?
A. Resistance thermometer
B. Thermocouple
C. Optical pyrometer (disappearing filament type)
D. Radiation pyrometer
A. Chromel-alumel
B. Iron-constantan
C. Platinum-platinum/rhodium
D. None of these
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