Question
Download Solution PDFZ1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Wattmeter reads the power and it is given by
P = VPC ICC cos ϕ
VPC is the voltage across pressure coil
ICC is current flows through the current coil
ϕ is the phase angle between VPC and ICC
Application:
The circuit representation of the given question is as shown below.
- The potential coil is connected across Z2.
- It reads the voltage across Z2 only.
- So, Wattmeter reads only power consumed by Z2.
Last updated on Jun 16, 2025
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