JAN 2025 1 . Sketch and describe a main engine shaft driven generator arrangement with an electronic system for frequency correction. (16) ANSWER CLICK 2. State the applications of the synchronous motors. Discuss how a synchronous motor can function as a synchronous capacitor. Compare synchronous motors with induction motor drives. ANSWER CLICK 3.a) Explain three methods of overcurrent protection for electrical circuit. b) Explain with aid of diagram, the meaning of the term inverse current time characteristic. ANSWER CLICK SECTION II 4. With respect to Alternators onboard: a) Briefly explain True Power, Apparent Power and Power Factor? b) The alternator is rated for 750 KVA at 0.85 PF. What is the maximum load (Kilo Watt) that can be put on it? Would you be overloading the alternator if the Kilowatt reading were now 620 KW and the power factor 0.80? ANSWER CLICK 5. Explain with the help of a neat diagram the operation of a Brushless alternator. What would likely happen if one of the r...
Types of Sensors (1) Temperature sensors (2) Pressure sensors (3) Proximity (4) Light sensors (5) Motion sensors (6) Humidity sensors (7) Gas sensors (8) Force sensors (9) Accelerometers (10) Magnetic sensors SENSOR S ensors are devices that are frequently used to detect and respond to electrical or other such signals. A Sensor converts the physical parameter (for example: temperature, pressure, speed, etc.) into a signal which can be measured electrically. Working Principle: Most sensors function by responding to a specific change in their environment, such as temperature, light, pressure, or movement, and then converting this physical change into an electrical signal. The signal can be analog or digital, depending on the sensor's design and the application. A- Industrial Automation : Sensors monitor processes, control machinery, and ensure safety. B- Healthcare : Used in medical devices for patient monitoring (e.g., heart...