Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > A DC voltmeter has sensitivity of 1000w /volt...
Start Learning for Free
A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter is
- a)100 mA
- b)1 mA
- c)50 mA
- d)0.5 mA
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A DC voltmeter has sensitivity of 1000w /volt. When it measures half f...
The resistance of voltmeter is Rv = 1kΩ*1000v =1mΩ
half scale the voltage across the voltmeter is 500V the current through the voltmeter Iv =
500/1mΩ = 5∗10−4A
=0.5mA
Most Upvoted Answer
A DC voltmeter has sensitivity of 1000w /volt. When it measures half f...
Explanation:
Given:
Sensitivity of DC voltmeter = 1000 W/V
Range of voltmeter = 100 V
Reading of voltmeter = half full scale = 50 V
To find:
Current through the voltmeter
Solution:
The current through the voltmeter can be calculated using the formula:
Iv = V / Rv
where, Iv = current through voltmeter
V = voltage across voltmeter
Rv = resistance of voltmeter
Resistance of voltmeter:
The resistance of voltmeter can be calculated using the formula:
Rv = (range / sensitivity)
where, range = 100 V (given)
sensitivity = 1000 W/V (given)
Rv = (100 / 1000) = 0.1 kΩ
Voltage across voltmeter:
The voltage across the voltmeter can be calculated using the formula:
V = (reading / full scale) * range
where, reading = 50 V (given)
full scale = 100 V (given)
range = 100 V (given)
V = (50 / 100) * 100 = 50 V
Current through voltmeter:
Substituting the values of Rv and V in the formula for current, we get:
Iv = V / Rv
Iv = 50 / 0.1kΩ = 0.5 mA
Hence, the current through the voltmeter is 0.5 mA. Therefore, option (D) is the correct answer.
Given:
Sensitivity of DC voltmeter = 1000 W/V
Range of voltmeter = 100 V
Reading of voltmeter = half full scale = 50 V
To find:
Current through the voltmeter
Solution:
The current through the voltmeter can be calculated using the formula:
Iv = V / Rv
where, Iv = current through voltmeter
V = voltage across voltmeter
Rv = resistance of voltmeter
Resistance of voltmeter:
The resistance of voltmeter can be calculated using the formula:
Rv = (range / sensitivity)
where, range = 100 V (given)
sensitivity = 1000 W/V (given)
Rv = (100 / 1000) = 0.1 kΩ
Voltage across voltmeter:
The voltage across the voltmeter can be calculated using the formula:
V = (reading / full scale) * range
where, reading = 50 V (given)
full scale = 100 V (given)
range = 100 V (given)
V = (50 / 100) * 100 = 50 V
Current through voltmeter:
Substituting the values of Rv and V in the formula for current, we get:
Iv = V / Rv
Iv = 50 / 0.1kΩ = 0.5 mA
Hence, the current through the voltmeter is 0.5 mA. Therefore, option (D) is the correct answer.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Top Courses for Electrical Engineering (EE)View all
A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer?
Question Description
A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer?.
A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer?.
Solutions for A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A DC voltmeter has sensitivity of 1000w /volt. When it measures half full scale in 100V range,the current through the voltmeter isa)100 mAb)1 mAc)50 mAd)0.5mACorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup