Three wire wound resitors have the following values 30 80 and 100. Each resistor has a voltage rating of 100 V. If these three resistors are connected in series, can they be connected to a 240 V circuit without damage to the resistors? Explain your answer.

The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.