2326 The heat produced by a rectifier a Leads to a higher am

23-26

The heat produced by a rectifier. a. Leads to a higher amperage in DC than AC b. Reduces the power efficiency of the welding machine c. Increases the power efficiency of the welding machine d. Can be recycled in a heat sink to provide power to other machines. The unit of measure of electrical power is. a. Volts b. Amps c. Watts In alternators the welding current is produced on the. a. Brushes b. Diode c. Armature d. Stator Inverter welders may have transformers as light as. a. 35 lb (16 kg) b. 2.2 lb(l kg) c. 17 lb (7.7 kg) d. 7 lb (3 kg)

Solution

23. Rectifier converts AC to DC.There are losses in these diodes,as they conduct in only direction and blocks current in other direction

24.Watts

25.Armature:Armature turns in magnetic field produced by magnets which produces emf in windings

26.7lb Currently commercially available inverter is in range of 3kg