MCQs
Total Questions : 141
| Page 3 of 15 pages
Answer: Option A. -> I = Iᵥ + Iᵣ
Answer: (a).I = Iᵥ + Iᵣ
Answer: (a).I = Iᵥ + Iᵣ
Question 22. A resistance R is measured using the connection shown in the below figure.
The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 Ω.
The possible error in the measurement of R is?
The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 Ω.
The possible error in the measurement of R is?
Answer: Option A. -> ±0.11 Ω
Answer: (a).±0.11 Ω
Answer: (a).±0.11 Ω
Answer: Option C. -> \(– \frac{R_x}{R_x + R_v} × 100\)
Answer: (c).\(– \frac{R_x}{R_x + R_v} × 100\)
Answer: (c).\(– \frac{R_x}{R_x + R_v} × 100\)
Question 24. A resistance R is measured using the connection shown in the below figure.
The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 Ω.
The value of R is?
The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 Ω.
The value of R is?
Answer: Option C. -> 12.25 Ω
Answer: (c).12.25 Ω
Answer: (c).12.25 Ω
Answer: Option D. -> \(\frac{R_x R_v}{R_x + R_v}\)
Answer: (d).\(\frac{R_x R_v}{R_x + R_v}\)
Answer: (d).\(\frac{R_x R_v}{R_x + R_v}\)
Answer: Option B. -> insufficient sensitivity of the null detector
Answer: (b).insufficient sensitivity of the null detector
Answer: (b).insufficient sensitivity of the null detector
Answer: Option A. -> directly proportional
Answer: (a).directly proportional
Answer: (a).directly proportional
Answer: Option C. -> lead and contact resistance
Answer: (c).lead and contact resistance
Answer: (c).lead and contact resistance
Answer: Option D. -> temperature increases due to power dissipation
Answer: (d).temperature increases due to power dissipation
Answer: (d).temperature increases due to power dissipation
Answer: Option B. -> limiting current to a safe value
Answer: (b).limiting current to a safe value
Answer: (b).limiting current to a safe value
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