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Quiz

Lesson 3: Analog Measuring Instruments – Galvanometer, Ammeter, Voltmeter and Ohmmeter — Picture questions (exam style)

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1.
A galvanometer (Rg = 50 Ω, Ig = 2 mA) is converted once into a 1 A ammeter and once into a 20 V voltmeter. Which option is correct?
A galvanometer (Rg = 50 Ω, Ig = 2 mA) is converted once into a 1 A ammeter and once into a 20 V voltmeter. Which option is correct?
Rs = 250 Ω, Rm = 400 Ω, resulting ammeter resistance ≈ 50.1 Ω
Rs = 1 Ω, Rm = 1e+04 Ω, resulting ammeter resistance ≈ 50.1 Ω
Rs = 0.1 Ω, Rm = 1e+04 Ω, resulting ammeter resistance ≈ 50 Ω
Rs = 0.1 Ω, Rm = 9950 Ω, resulting ammeter resistance ≈ 0.1 Ω
2.
Which statement about the instruments shown is NOT correct?
Which statement about the instruments shown is NOT correct?
the multiplier is in series and has large resistance
a smaller shunt gives a larger ammeter range
the shunt is in parallel with the coil and has small resistance
the ohmmeter zero is at zero deflection
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