Question
Download Solution PDFDynamometer type wattmeter responds to the __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFA dynamometer-type wattmeter gives the value of active power but not reactive power. It detects the average value of power.
Wattmeter:
A wattmeter is an electrical instrument that is used to measure the electric power of any electrical circuit.
The internal construction of a wattmeter is such that it consists of two coils. One of the coils is in series and the other is connected in parallel.
The coil that is connected in series with the circuit is known as the current coil and the one that is connected in parallel with the circuit is known as the voltage coil
The wattmeter measures the average power.
The reading of the wattmeter will be,
Average power = Vpc Icc cos ϕ
Where,
Vpc is the voltage across the pressure coil
Icc is current flows through the current coil
ϕ is the phase angle between Vpc and Icc
So, a wattmeter is a device capable of detecting voltage, current and the angle between the voltage and the current to provide power readings.
Last updated on Jun 11, 2025
-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.
-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here