Hamad Rectifiers and Converters 27/07/2020 A. low power factor B. high power factor C. zero power factor D. none of the above Related Mcqs: Ageing of a selenium rectifier may change the output voltage by__________?A. 5 to 10 per cent B. 15 to 20 per cent C. 25 to 30 per cent D. none of the above... Copper oxide rectifier is usually designed not to operate above___________?A. 10°C B. 20°C C. 30°C D. 45°C... The voltage drop at anode, in a mercury arc rectifier is due to_____________?A. self restoring property of mercury B. high ionization potential C. energy spent in overcoming the electrostatic field D. high temperature inside the rectifier... Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required ?A. Motor-generator set B. Motor converter C. Rotary converter D. Mercury arc rectifier... In which of the following equipment direct current is needed ?A. Telephones B. Relays C. Time switches D. All of the above...
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