GATE EE 2021: Measurement Quiz 2 (App update required to attempt this test)

In the figure, the value of resistor R is (25 + I/2) ohms, where I is the current in amperes. The current I is _____.

A voltmeter reads 100.5 V. The error taken from an error curve is 5%. Find the true value of the voltage.

In a moving coil instrument having a meter resistance of 40 Ω which given a full-scale deflection with a voltage of 20 mV. The range of instrument is external by using an external series resistor up to 10 V. It the temperature coefficient of copper is 0.0032 Ω /Ω°C & that of manganin is 0.0002 Ω / Ω°C. Then what would be the error cannot by 12°C rise in temperature in the reacting of voltmeter in percentage.

Calculate the value of the multiplier resistor (in Ω) for a V_rms sinusoidal ac range of the voltmeter shown in fig. The forward resistance of diode 5 Ω

A (0-100) V voltmeter has a guaranteed accuracy of 2% of full-scale reading. The voltage measured by this voltmeter is 70V. The limiting error in percentage is