Steam and Gas Turbines Multiple Choice Questions on “Economic Aspect of Regenerator Design”.
1. In two stat regenerator system ________ stage is known as partial combustion mode.
a) first
b) last
c) intermediate
d) none of the mentioned
Answer: a
Clarification: In two stage regenerator system first stage combusts CO with all the available oxygen.
2. Amount of coke burnt is _______ in first stage of two stage regenerator.
a) varied
b) constant
c) Zero
d) none of the mentioned
Answer: b
Clarification: Amount of coke burned varies in first stage of two stage regenerator.
3. In two stage regenerators catalyst deactivation rates are _______
a) low
b) high
c) medium
d) none of the mentioned
Answer: a
Clarification: The environment produced in two stage regenerator is gentle and hence catalyst deactivation rates are low.
4. ________ catalyst deactivation rates are benefited as catalysts are poisonous in nature.
a) medium
b) high
c) less
d) none of the mentioned
Answer: c
Clarification: Less catalyst deactivation rates are benefited as catalysts are poisonous in nature.
5. In two stage regenerator system catalyst cooler is added.
a) True
b) False
Answer: a
Clarification: In a two stage regenerator system a catalyst cooler is present.
6. Cooling capacity of catalyst cooler is _________ MMBtu/h.
a) 120
b) 100
c) 140
d) 200
Answer: c
Clarification: Cooling capacity of catalyst cooler is 140MMBtu/h.
7. When cooling system is needed to be increased no of catalyst coolers are _________ by two or three.
a) increased
b) decreased
c) not related
d) none of the mentioned
Answer: a
Clarification: When cooling system is needed to be increased no of catalyst coolers are increased to two or three.
8. In two stage FCC regenerator FCC stands for fluid catalytic cracking unit.
a) True
b) False
Answer: a
Clarification: In two stage FCC regenerator FCC stands for fluid catalytic cracking unit.
9. Total no of FCC regenerators operated in India are ______
a) 20
b) 10
c) 5
d) 15
Answer: b
Clarification: Total no of 10 FCC regenerators are operated India.
10. Minimum obtained catalyst loss is ________ Kg/day.
a) 500
b) 400
c) 420
d) 360
Answer: c
Clarification: Minimum obtained catalyst loss is 420kg/day.