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When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?
A moving coil instrument has a resistance of 70 Ω and gives full scale deflection of 100 scale divisions for a current of 1 mA. The instrument is connected in parallel with a shunt of 30 Ω resistance and this combination is then connected in series with a load and supply. Determine the current in the load when the instrument gives an indication of 80 scale divisions.
The amount of electric charge flowing through electric circuit in 10 minutes is 300 coulombs. Find the electric current drawn by the filament of the electric bulb is?
An electric current of 0.75A flows in a filament of an electric bulb for 10 minutes. Find the amount of electric charge flowing through the current.
An electric current of 0.5 A flows in the filament of an electric bulb for 8 min. What will be the amount of charge flows by electric current?
_________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency.
_________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lowers its frequency.
Read the given passage/argument and answer the question that follow it. Govt of India has reconfirmed their plans to go full ballistic for electric cars. An announcement which will make Elon Musk and patrons of electric vehicles super happy, India plans to allow the sale of only electric cars by 2030, which is just 12 years away. This means that petrol/diesel cars won’t be allowed on the road after 2030. This is a massive, powerful endorsement of electric, green technology, and can change transportation industry forever.  Which of the following argument can be made from above passage?
Consider the following instruments: 1. MI instrument 2. Electrostatic instrument 3. Electrodynamometer instrument Which of the above instruments is/are free from hysteresis and eddy-current losses?
Which of the following is/are true about dipole? (1) The unit of electric dipole moment is coulomb meter (2) The net charge of the electric dipole is zero (3) The net electric field due to an electric dipole is nonzero. (4) Point diploe is the diploe with a small value of the charge.