Exam Question
Tank liquid sensors are an integral part of ships. Describe with the aid of suitable sketches the working principle of:
(a) Capacitive type level sensor (6)
(b) Ultrasonic level sensor (5)
(c) Float (5)
ETO
ETO Exam papers
📅 Dec 2023
Reference Answer
### (a) Capacitive Type Level Sensor (6 Marks)
#### Principle of Operation
A capacitive level sensor operates on the principle of an electrical capacitor. A capacitor stores energy in an electric field between two conductive plates separated by a dielectric material. The capacitance (C) is determined by the formula:
$$ C = \frac{k \cdot \epsilon_0 \cdot A}{d} $$
#### Principle of Operation
A capacitive level sensor operates on the principle of an electrical capacitor. A capacitor stores energy in an electric field between two conductive plates separated by a dielectric material. The capacitance (C) is determined by the formula:
$$ C = \frac{k \cdot \epsilon_0 \cdot A}{d} $$
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play