Question
Download Solution PDFAn 230 V, 1-phase watt hour meter records a constant load of 10 A for 10 h at unity PF If the meter disc makes 2300 revolutions during this period, what is the meter constant in revolutions/kWh?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The meter constant (in revolutions per kWh) is calculated by dividing the number of disc revolutions by the total energy consumed (in kWh).
Formula:
\[ \text{Meter Constant} = \frac{\text{Number of revolutions}}{\text{Energy consumed (in kWh)}} \]
Given:
- Voltage (V) = 230 V
- Current (I) = 10 A
- Time = 10 hours
- Power Factor = 1 (Unity)
- Revolutions = 2300
Calculation:
Power consumed = V × I × PF = 230 × 10 × 1 = 2300 W = 2.3 kW
Energy consumed = Power × Time = 2.3 kW × 10 h = 23 kWh
\[ \text{Meter Constant} = \frac{2300}{23} = 100 \text{ rev/kWh} \]
Last updated on Jul 1, 2025
-> SJVN Executive Trainee Written Exam date is out, The computer based exam will be held on 10th, 11th August 2025.
->SJVN Executive Trainee recruitment 2025 application form has been released. Applicants can apply for the SJVN recruitment 2025 Executive Trainee till May 18.
->SJVN Limited has announced the recruitment notification for the position of Executive Trainee 2025.
->A total of 114 vacancies are available for the SJVN Executive Trainee Recruitment across various disciplines such as Civil, Mechanical, Electrical, Environment, Electronics & Communication, and more.
->The selection process of SJVN Executive Trainee recruitment 2025, as per the previous notification, includes a Computer-Based Test, Group Discussion, and Personal Interview.
->Once selected, candidates will be required to sign a service agreement bond of Rs. 10,00,000/- (Rs. 7,50,000/- for SC/ST/PWD candidates), committing to complete the prescribed training and serve the company for a minimum of 3 years.
->Candidates must refer to the SJVN Executive Trainee Previous Year Papers and boost their preparation for the exam.