Abalanced y -connected load having an impedance of 92+j21ω/ϕ is connected in parallel with a balanced δ -connected load having an impedance of 150∠ 0 ∘ ω/ϕ . the paralleled loads are fed from a line having an impedance of j1ω/ϕ . the magnitude of the line-to-line voltage of the δ -load is 8150 v .

a. calculate the magnitude of the current in the line feeding the loads.
b. calculate the magnitude of the phase current in the y- connected load.
c. calculate the magnitude of the phase current in the delta-connected load.
d. calculate the magnitude of the line voltage at the sending end of the line.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.