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Questions on Electrical Instruments (in Hindi)
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Fundamental questions for Electrical Instruments

Welcome to Any Time Padhai academy! Awesome content for JEE & NEET | Founded by Vineet Khatri Sir | 33 mn views & 3.5 lac students

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STARK ATUL
a year ago
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Also please do a separate lecture in these series with questions with JEE difficulty level
Sir aapne errors mai young modulus ka calculation nahi Bata ya hai pls wo bhi Bata dijiye!!!!!
thank u sir for all the awesome content
thank you sir. These videos are so helpful
thank you sir
1. AT P Any Time Padhai Academy JEE Mains Special Question on Electrical instruments

2. A galvanometer has a resistance of 30 ohm and a current of 2 mA is needed to give a full scale deflection. What is the resistance needed and how is it to be connected to convert the galvanometer. (a) Into an ammeter of 0.3 ampere range? (b) Into a voltmeter of 0.2 volt range? REE-1986] REE-1986 (1-12) 0.3A 30 2 10-3 =0.2013 0.3-2x10 (a) s V-0.2 volt (b) R = 70

3. : 30 -2 a) 0.3-a S Gr 3) S

4. 6) Vilt 3. 61 d-2 volt 0.2 Volt = 1, ( R-3 )

5. The meter-bridge wire AB shown in figure is 50 cm long. When AD = 30 cm, no deflection occurs in the galvanometer. Find R. 6 D B (A) 1 (B) 2 (C) 3 (D*) 4

6. Gr Fo 8alanced usheats tone 30 Ro

7. A battery of emf 1.4 V and internal resistance 2 is connected to a resistor of 100 through an ammeter. The resistance of the ammeter is 43 . A voltmeter has also been connected to find the potential difference across the resistor. (i) Draw the circuit diagram. qui f (i) The ammeter reads 0.02 A. What is the resistance of the voltmeter? (iii) The voltmeter reads 1.10 V, what is the zero error in the voltmeter? (Hint: zero error = observed reading-actual reading) 2 1.4 V 100 (ii) 200 (iii) 1.1 0.23 V 3

8. i) t 1 = 0.02 Rnet 3 10a +2 100 R -) R= 200/L 3100 tR = 0.02 00 R 100 +R 1-y 0.02 x l 0.02 (100 R) = 100+R 1d0 R 4. 2-0 2 3

9. i) 0-02 3 0.023003 Actual Read .a 3 3 viabe Ready = 1-1 4 = _o.zg 3uro Errer Vible Reads-Actual Read 3

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