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A 4(1/2) digit DMM has the error specification as 0.2% of reading +10 counts. If a d.c. voltage of 100 V is read on its 200 V full-scale, the maximum error that can be expected in the reading is:
  • a)
    ±0.1%
  • b)
    ±0.2%
  • c)
    ±0.3%
  • d)
    ±0.4%
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A4(1/2) digit DMM has the error specification as0.2%of reading+10count...
Maximum count with 4(1/2) digits display =19999
Given, Full-scale reading = 200V
So, 1 count = 200V/19999
For, 10 count it will be, 
And, error corresponded to 0.2% of reading (for 100 V ) = 0.2 x (100/100) = ±0.2V
So, total error will be the sum of error due to 10 counts and error corresponded to 0.2% of reading,
or, Total error  = ±0.1 V+±0.2 V = ±0.3 V
% percentage error = (0.3/100) x 100% = ±0.3
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A4(1/2) digit DMM has the error specification as0.2%of reading+10counts. If a d.c. voltage of100Vis read on its200Vfull-scale, the maximum error that can be expected in the reading is:a)±0.1%b)±0.2%c)±0.3%d)±0.4%Correct answer is option 'C'. Can you explain this answer?
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A4(1/2) digit DMM has the error specification as0.2%of reading+10counts. If a d.c. voltage of100Vis read on its200Vfull-scale, the maximum error that can be expected in the reading is:a)±0.1%b)±0.2%c)±0.3%d)±0.4%Correct answer is option 'C'. Can you explain this answer? for RRB NTPC/ASM/CA/TA 2024 is part of RRB NTPC/ASM/CA/TA preparation. The Question and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus. Information about A4(1/2) digit DMM has the error specification as0.2%of reading+10counts. If a d.c. voltage of100Vis read on its200Vfull-scale, the maximum error that can be expected in the reading is:a)±0.1%b)±0.2%c)±0.3%d)±0.4%Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for RRB NTPC/ASM/CA/TA 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A4(1/2) digit DMM has the error specification as0.2%of reading+10counts. If a d.c. voltage of100Vis read on its200Vfull-scale, the maximum error that can be expected in the reading is:a)±0.1%b)±0.2%c)±0.3%d)±0.4%Correct answer is option 'C'. Can you explain this answer?.
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