Exam Question
(a) Sketch and describe a power (watt) meter for an a.c. switchboard. (8)
(b) State why type of load concerns power factor and give examples of power factor for a resistance load and for normal marine operation. (8)
Class 4 (4th Engineer)
MET
📅 Nov 2025
Reference Answer
### Part (a): Power (Watt) Meter for an A.C. Switchboard
#### 1. Sketch and Construction
A wattmeter used on a ship's main switchboard is typically of the electrodynamometer type. Its construction consists of two sets of coils:
* **Fixed Coils (Current Coils):**
#### 1. Sketch and Construction
A wattmeter used on a ship's main switchboard is typically of the electrodynamometer type. Its construction consists of two sets of coils:
* **Fixed Coils (Current Coils):**
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