Could somebody help me on a question I have came across when I have been studying for my exam - Describe, with the aid of a sketch, a method ofremotely monitoring the contents of a fuel oil tank
thank you

a. Sight glass (including magnetic)
b. Tank level indicator (pressure transducer)
c. Ullage indicator (Ultrasonic or “radar”)
d. Tank level indicator (ball float / electrical)
e. Tank level indicator (ball float / mechanical)

Which exam are you studying for?