MCQOPTIONS
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MCQOPTIONS
This section includes 256 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________? |
| A. | 45° |
| B. | -90° |
| C. | -180° |
| D. | -45° |
| Answer» E. | |
| 252. |
“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion? |
| A. | Bode stability |
| B. | Nyquist |
| C. | Routh stability |
| D. | None of these |
| Answer» B. Nyquist | |
| 253. |
A constant volume gas thermometer employing ______________ is used to measure sub-zero (i.e., < 0°C) temperature? |
| A. | Helium |
| B. | Hydrogen |
| C. | Nitrogen |
| D. | None of these |
| Answer» B. Hydrogen | |
| 254. |
A bolometer is __________________? |
| A. | Used for the measurement of thermal radiation |
| B. | An element which senses optical input and delivers thermal output |
| C. | Both A. & B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 255. |
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________? |
| A. | Temperature measuring range (- 40°C to 450°C) |
| B. | Accuracy (± 1% of span) |
| C. | Speed of response |
| D. | All a, b & c |
| Answer» E. | |
| 256. |
A barometer measures the _____________ pressure? |
| A. | Absolute |
| B. | Gauge |
| C. | Absolute as well as gauge |
| D. | dynamic |
| Answer» B. Gauge | |