This set of Metal Casting Multiple Choice Questions & Answers (MCQs) focuses on “Tem Tech Thermal Sand Reclamation”.
1. In the tem tech thermal sand reclamation system, how many fluidized beds are used?
a) One
b) Two
c) Three
d) Four
View Answer
Explanation: In the tem tech thermal reclamation system, a fluidized bed plays an important role in the sand reclamation system. There are in total two fluidized beds that are used.
2. In the tem tech thermal sand reclamation system, the recirculating air ensures what?
a) Even pressure drop
b) Even temperature drop
c) Even volume drop
d) Even loss of mass
View Answer
Explanation: In tem tech thermal sand reclamation system, the recirculating air ensures an even pressure drop at all its orifices.
3. What is the heat source of fluidized bed in tem tech thermal sand reclamation system?
a) Flame heating
b) Ultraviolet heating
c) Infrared heating
d) Conduction heating
View Answer
Explanation: In tem tech thermal sand reclamation system, overall there are two beds involved in it and in them, shortwave infrared emitters are used in the beds.
4. In tem tech thermal sand reclamation system, in the infrared heating system, which material is used in the beds?
a) Copper
b) Iron
c) Silver
d) Tungsten
View Answer
Explanation: In tem tech thermal sand reclamation system, in the heating process by shortwave infrared emitters, tungsten elements are used.
5. What is the maximum working temperature in a fluidized bed in tem tech thermal sand reclamation system?
a) 1000°C
b) 2000°C
c) 3000°C
d) 4000°C
View Answer
Explanation: In tem tech working system, there are two fluidized beds involved. The maximum working temperature in a fluidized bed in a tem tech thermal sand reclamation system is 2000°C.
6. The infrared radiation passes through what before entering into the fluidized bed?
a) Prism
b) Concave lens
c) Quartz
d) Convex lens
View Answer
Explanation: In the tem tech thermal sand reclamation system, the infrared radiation passes through a quartz sleeve before entering the fluidized bed.
7. Up to what accuracy can the temperature of the bed be controlled in tem tech thermal sand reclamation system?
a) ± 1%
b) ± 2%
c) ± 3%
d) ± 4%
View Answer
Explanation: The temperature of the bed can be controlled to an accuracy of ± 2%, in tem tech thermal sand reclamation system. These fluidized beds essentially need a very accurate temperature control.
8. In tem tech thermal sand reclamation system, what is the maximum current temperature?
a) 600°C
b) 700°C
c) 800°C
d) 900°C
View Answer
Explanation: In tem tech thermal sand reclamation system, a high amount of temperature has to be maintained. The maximum current temperature is 800°C.
9. In tem tech thermal sand reclamation system, how much is the energy conversion efficiency?
a) 75%
b) 80%
c) 85%
d) 90%
View Answer
Explanation: In tem tech thermal sand reclamation system, it is observed that the energy that is used gets reused and by other methods, the efficiency is taken up to great heights. There is a high energy conversion efficiency of 85%.
10. One of the goal of tem tech thermal sand reclamation system, is to lower fluidization.
a) True
b) False
View Answer
Explanation: One of the very important goals of tem tech thermal sand reclamation system, is to lower the fluidization, to lower emissions to atmosphere.
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