Types of Fire Extinguishers

Types of Fire Extinguishers Q. Which types of fire extinguishers are in your institute state their locations. Types of Fire Extinguisher Many types of fire extinguishers are available with different extinguishing ‘agents’ to deal with different classes of fires. Water-filled extinguishers: There are two methods of operation. Gas cartridge type Stored pressure type With both … Read more

Conditions for Parallel Operation of 3Φ Transformer.

Conditions for Parallel Operation of 3Φ Transformer. Q. State various conditions for parallel operation of 3Φ transformer. Conditions : Voltage ratings of the primary windings should be suitable for supply system voltage and frequency.  The windings must be properly connected as regards their polarities.  Voltage ratings of primary and secondary of both transformers must be identical … Read more

Specific Test Before and After Commissioning of Transformer

Specific Test Before And After Commissioning of Transformer Q. List the specific test before and after commissioning of transformer. 1. Mechanical tests 2. Electrical tests THESE RULES MUST BE FOLLOWED FOR ALL TEST PROCEDURES. Following is an approximate sequence for transformer testing: 1. Inspect transformer and parts for shipping damage and moisture. 2. Check nameplate … Read more

Precautions To Be Taken While Working On An Electrical Installation

Precautions To Be Taken While Working On An Electrical Installation Q. Enlist any four precautions to be taken while working on an electrical installation ? Don’t use loose clothing; Don’t use clothes with metallic buttons. Don’t use nailed shoes. Don’t keep with you the metallic keys, chains while working. Treat everything as live.