MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which one of the following method can be adopted to increase the capacity of the evaporator? |
| A. | Increase pressure in calandria |
| B. | Using multiple effect evaporator |
| C. | Getting the temperature of the feed close to boiling temperature |
| D. | Reducing the temperature of the feed |
| Answer» D. Reducing the temperature of the feed | |
| 2. |
The capacity of an evaporator depends upon the temperature of the feed solution. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
If evaporation takes place from a 100kg feed of 50wt% solid at 25℃ in an hour and if the steam consumption is 30Kg/hr, then what is the final concentration?Latent heat of vaporization of water = 2,260 kJ/kgSpecific heat capacity = 6 KJ/Kg K |
| A. | 57 |
| B. | 56 |
| C. | 55 |
| D. | 54 |
| Answer» C. 55 | |
| 4. |
If the Evaporator Consumption is 10kg/hr then what should be the inlet feed rate if we wish to have a capacity if 4kg/hr?Latent heat of vaporization of water = 2,260 kJ/kgSpecific heat capacity = 6 KJ/Kg K |
| A. | 30kg |
| B. | 32kg |
| C. | 31kg |
| D. | 33kg |
| Answer» B. 32kg | |
| 5. |
Find one among the following which does not measure evaporator performance. |
| A. | Steam Consumption |
| B. | Amount of Vapour Produced |
| C. | Economy |
| D. | Amount of feed supplied |
| Answer» E. | |
| 6. |
What do we mean by the term Evaporator Consumption? |
| A. | Steam consumed in 1hr |
| B. | Steam produced in 1hr |
| C. | Feed supplied in 1hr |
| D. | Feed supplied in 1day |
| Answer» B. Steam produced in 1hr | |
| 7. |
What is the value of Evaporator Economy if we have a feed of 30kg at 25℃ and with evaporator consumption as 10kg/hr?Latent heat of vaporization of water = 2,260 kJ/kgSpecific heat capacity = 6 KJ/Kg K |
| A. | 42% |
| B. | 30% |
| C. | 40% |
| D. | 50% |
| Answer» D. 50% | |
| 8. |
Find the value of Evaporator Capacity if we have a feed of 30kg at 25℃ and with evaporator consumption as 10kg/hr?Latent heat of vaporization of water = 2,260 kJ/kgSpecific heat capacity = 6 KJ/Kg K |
| A. | 2kg/hr |
| B. | 3kg/hr |
| C. | 4kg/hr |
| D. | 5kg/hr |
| Answer» D. 5kg/hr | |
| 9. |
What is the Evaporator Consumption if we evaporate 10kg of water from a feed of 50kg at a temperature of 25℃ to a final temperature of 100℃ in an hour?Latent heat of vaporization of water = 2,260 kJ/kgSpecific heat capacity = 6 KJ/Kg K |
| A. | 21kg/hr |
| B. | 22kg/hr |
| C. | 20kg/hr |
| D. | 19kg/hr |
| Answer» D. 19kg/hr | |
| 10. |
What is the steam consumption of an evaporator if the evaporator capacity is 30kg/her and the steam consumption is 45kg/hr? |
| A. | 67% |
| B. | 70% |
| C. | 80% |
| D. | 65% |
| Answer» B. 70% | |
| 11. |
What are the parameters to determine the evaporator economy? |
| A. | Evaporator Capacity |
| B. | Evaporator temperature |
| C. | Evaporator pressure |
| D. | Evaporator Fluid supply |
| Answer» B. Evaporator temperature | |
| 12. |
What is defined by the term Evaporator Capacity? |
| A. | Kg of fluid supplied in one day |
| B. | Kg of water evaporated in one day |
| C. | Kg of fluid supplied in 1hr |
| D. | Kg of water evaporated in 1hr |
| Answer» E. | |