Question: A wattmeter has a full scale range of 2500 W. it has an error of ±1% of true value. What would be the range of reading if true power is 1250 W ?
Answer:
MCQ: A wattmeter has a full scale range of 2500 W. it has an error of ±1% of true value. What would be the range of reading if true power is 1250 W ?
Correct Answer:
A. 1225 W – 1275 W
Discuss a Question
Related Questions
- 1. Power in d.c circuit is measured by measuring the voltage across and current through the circuit.The voltage and current measurements are made to an accuracy of ±2% and ±3% respectively. The errors are limiting errors. The error in measurement of power is:
- 2. The power in a circuit is measured by measuring a current through a resistor. The current is measured with an accuracy of ±1.5% and the tolerance band of resistor ±0.5%. the errors are limiting or guarantee errors. The accuracy with which power is measured is :
- 3. In an permanent magnet moving coil ammeter the deflection of the pointer is proportional to product of flux density of magnetic field produced by the permanent magnet and current in the moving coil. if the strength of permanent magnet becomes 95% of the original, The meter gives erroneous reading resulting into error. This error can be classified as:
- 4. The voltage of circuit is measured by a voltmeter having an input impedance comparable with the output impedance of the circuit thereby causing error in voltage measurement. This error may be called
- 5. The mean Deviation D in terms of deviation from the mean value of <em>n</em> reading is
- 6. A set of readings has a wide range and therefore it has:
- 7. The Gaussian distribution can be mathematically expressed as:
- 8. for a Gaussian distribution, the probable error is <em>r. </em>This means that:
- 9. Two resistances 100Ω ± 5Ω and 150Ω ± 15Ω are connected in series. If the deviations are standard deviations, the resultant resistance can be expressed as:
- 10. if the result of a measurement is expressed as x̅ ± 3σ where x̅ = mean value and σ = standard deviation ,it means that :
You may be interested in:
Electrical and Electronics Measurements and Instrumentation MCQsRecently Added Articles
5 Best Amazon Advertising Agencies for Growing Brands
Last updated on: November 6, 2026Posted by: ExamRadar
How Image to Text Conversion Make Printed Study Materials Easier to Use?
Last updated on: October 23, 2026Posted by: ExamRadar
7 Best Online Exam Makers for Teachers, Schools, and Businesses
Last updated on: October 21, 2026Posted by: ExamRadar
How to pick a Bintan resort when you’ve only got 48 hours
Last updated on: September 23, 2026Posted by: ExamRadar
Features to Look for While Choosing the Best Automation Tool
Last updated on: July 15, 2026Posted by: ExamRadar
How Do Java Development Teams Use Docker and Kubernetes to Deploy Applications?
Last updated on: April 24, 2026Posted by: ExamRadar
AI vs Machine Learning: Key Differences Every Professional Should Know
Last updated on: February 13, 2026Posted by: ExamRadar