A moving coil milli-voltmeter has a resistance of 200 Q and the full scale deflection is reached when a potential difference of 100 mV is applied across the terminals. The moving coil has effective dimensions of 30 mm × 25 mm and is wound with 100 turns. The flux density in the air gap is 0.2 ob/m². Determine the control constant, if the final deflection is 100° and a suitable diameter of copper wire for coil winding if 20% of the total instrument resistance is due to the coil winding. Resistivity of copper is 1.7 × 10N-m.

Q: a) A sinewave is having a frequency of 100 Hz and instantaneous value of 100 Volts at 1.1 milli…

A:

Q: What are the types of semicondoctors available

A: The objective of the question is to identify and describe the different types of semiconductors…

Q: The peak value of the output voltage across the load shown in figure for a given input of 230V, 50HZ…

A:

Q: Which of the following would have a greater amount of inductance if connected to an AC power source?…

A: The explanation is as follows.

Q: The polarity of an induced voltage is determined by (a) Lenz's law (c) the amount of current in the…

A: The polarity of an induced voltage is determined by Lenz's law

Q: The transformer shown in figure 3 has a ratio of 120rms:24rms CT. RL = 2K and the diodes are ideal.…

A: The transformer ratio is 120rms:24rms CT. RL = 2K and the diodes are ideal. F=60Hz What would be the…

Q: If a voltage with RMS values of 220 and freq of 60 Hz is applied to a coil with 250 turns, find…

A:

Q: How many turns are on a coil if a current of 1350mA produces a magnetic flux of 1.5mWb in a magnetic…

A: In this question we will find no of turns in coil ...

Q: 10. Determine the peak-to-peak ripple and de output voltages in Figure 5. The transformer has a 36 V…

A: Given circuit parameters: Supply voltage - 120 Vrms Wheat-stone full-wave rectifier Rsurge = 10 ohm…

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.