The resistance R and a 2 μF capacitor are connected in series across 200-V dc supply. Across the capacitor is a neon lamp that strikes at 120 volts. Calculate the value of R to make the lamp strikes 5 seconds after the switch has been closed. A. 4.89 kΩ B. 4.89 MΩ C. 2.73 MΩ D. 2.94 MΩ

The resistance R and a 2 μF capacitor are connected in series across 200-V dc supply. Across the capacitor is a neon lamp that strikes at 120 volts. Calculate the value of R to make the lamp strikes 5 seconds after the switch has been closed. A. 4.89 kΩ B. 4.89 MΩ C. 2.73 MΩ D. 2.94 MΩ

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 5SQ: The symbol shown is a a. polarized capacitor. b. normally closed switch. c. normally open held...

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HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.

Question

20. The resistance R and a 2 μF capacitor are connected in series
across 200-V dc supply. Across the capacitor is a neon lamp
that strikes at 120 volts. Calculate the value of R to make the
lamp strikes 5 seconds after the switch has been closed.
A. 4.89 kΩ B. 4.89 MΩ C. 2.73 MΩ D. 2.94 MΩ

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