The circuit shown below is the phase angle controller connected to full wave controlled rectifier. If the voltage Vg increases, the firing angle (x) consequently DC voltage across the motor and R1 R2 V8 Q1 lai UJT, VR1 R1 decreases, decreases O increases, decreases decreases, increases O increases, increases

The circuit shown below is the phase angle controller connected to full wave controlled rectifier. If the voltage Vg increases, the firing angle (x) consequently DC voltage across the motor and R1 R2 V8 Q1 lai UJT, VR1 R1 decreases, decreases O increases, decreases decreases, increases O increases, increases

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter30: Dc Motors

Section: Chapter Questions

Problem 6RQ: What is CEMF?

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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

The circuit shown below is the phase angle controller connected to full wave
controlled rectifier. If the voltage Vg increases, the firing angle (x)
consequently DC voltage across the motor
and
R1
R2
V8
Q1
lai
UJT,
VR1
R1
decreases, decreases
O increases, decreases
decreases, increases
O increases, increases

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