A rotor-resistance starter for a three-phase wound-rotor induction motor January 30, 2021 Read More »
Calculate the resistance of a shunt required to convert it for use as a 0–10 A ammeter. January 30, 2021 Read More »
Draw a circuit diagram showing a single-phase wattmeter measuring the power in a single-phase 6.6 kV 500Acircuit by means of current and voltage transformer January 30, 2021 Read More »
find the resistance of a resistor, various currents were passed through the resistor and the corresponding voltage drops across it were measured. January 30, 2021 Read More »
Describe briefly how the bridge would be used to determine the value of the resistor, X . January 30, 2021 Read More »
Explain the principle on which the Wheatstone bridge works. Show how it could be used to measure the resistance of a busbar joint by comparison with a standard 0.1 _ resistor. January 30, 2021 Read More »
Calculate the RMS values of a sinusoidal alternating voltage applied to the Y plates of a CRO if it gives the following vertical lengths of trace, the Y amplifier control setting for each display being shown after the trace length January 30, 2021 Read More »
what is the biggest disadvantage of the permanent-magnet moving-coil instrument January 30, 2021 Read More »