Mechanical Engineering : Process Instrumentation And Control QUESTIONS AND ANSWERS :: part4 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.An operation which, in the presence of a disturbing influence, tends to reduce the difference between the actual state of a system and an arbitrarily varied desired state and which does so on the basis of this difference, is called : |
| automatic control |
| feedback control |
| open feed back control |
| closed feed back control |
| self regulation. |
2.The orsat apparatus is used for measuring: |
| chemical analysis of flue gases |
| moisture in air |
| composition of alloys |
| colour spectrum |
| molecular configuration. |
3.The density can be measured using : |
| weight |
| buoyancy |
| hydrostatic head |
| resonant elements |
| all of above. |
4.Spectrophotometer is used to : |
| measure surface hardness |
| measure surface characteristics |
| measure chemical composition of al-loys |
| analyse colour spectrum |
| analyse gas composition. |
5.Which measurement is a good guide to the quality of the water : |
| conductivity |
| pH |
| dissolved 02 content |
| turbidity |
| all of the above. |
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