Although this thread was started several months ago I did not see it at the time.
Parasite Tango you are correct in pointing out that the book indicates option b as the answer. But the accompanying explanation states that "the pressure is sensed on the outlet side of the pump". The diagram provided with this explanation also shows the pressure sensor on the outlet side of the pump.
This is clearly a case of a typing error in putting option b as the answer. I am about carry out a major update of this book shortly to include CQB15 questions. I will correct this typing error as part of that update.
Thank you for pointing it out.
Last edited by keith williams; 10th March 2011 at 15:08.