1. A 500 mA voltmeter is specified to be accurate with ±2%. Then, what is the limiting error when instrument is used to measure 300 mA?
2. With the signal generator frequency of a Q meter set to 1.25 MHz, the Q of a coil is measured as 98 when Capacitance C = 147 pF. Then the coil inductance and resistance would be
3. Which one of the following meters has maximum loading effect on the circuit under measurement?
4. Which is not an active transducer
5. The current flowing through the resistor R is as indicated in the given figure. The computed value of power is
6. A special voltmeter can be devised which can measure the amplitude of a signal at two points in a circuit and simultaneously measure the phase difference between the voltage waveforms at these two points. Such a meter would be a
7. A heater element is made of nichrome wire having resistivity equal to 100 × 10-8 Ωm and diameter of 0.4 mm. The length of the wire required to get a resistance of 40 Ω will be nearly
8. The primary current in a current transformer is dedicated by
9. The power factor meter has
10. Which one of the following is the correct statement?
Active probe used in a CRO
Active probe used in a CRO
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