the dreaded queston #75

This was a modified question from the NRC Bank. The reason that the instructors picked this question was “to illustrate that memorizing the exam bank” was not desired. The funny response when half of the class missed the question was “got ya!!” The response, initially, did not actually address the possibility that the question or the distractors were substandard. There were some relatively snide emails that passed between the instructors and our department mentors and managers and at least one of them was good enough to pass it along to the students. On further investigation, it was revealed that the question could be worked at least two ways and that the stem of the question had been incorrectly modified. In all, it took a week before the dubious quality of the question was acknowledged by the staff. Here is the original question followed by the modified question. If you want to do the calculations you will need your steam tables!! Enjoy!!!

TOPIC: 191006
KNOWLEDGE: K1.13 [2.8/2.9]
QID: P2984 (B2084)
The following 100% rated power conditions existed before a nuclear power plant outage:
Main condenser pressure: 1.20 psia
Cooling water inlet temperature: 60F
Cooling water outlet temperature: 92F

During the outage, 6% of the main condenser tubes were plugged. After the outage, the following 100% rated power conditions exist:
Main condenser pressure: 1.31 psia
Cooling water inlet temperature: 60F
Cooling water outlet temperature: ?

Which one of the following is the approximate cooling water outlet temperature after the outage?
A. 92F
B. 94F
C. 96F
D. 98F

___________________________________________________________
The following 100% rated power conditions existed before a nuclear power plant outage:
Main condenser pressure: 1.20 psia
Cooling water inlet temperature: 60F
Cooling water outlet temperature: 92F

During the outage, 6% of the main condenser tubes were plugged. After the outage, the following 100% rated power conditions exist:
Main condenser pressure: 1.35 psia
Cooling water inlet temperature: 60F
Cooling water outlet temperature: ?

Which one of the following is the approximate cooling water outlet temperature after the outage?
A. 92F
B. 94F
C. 96F
D. 98F