He following waveforms are measured through a particular device: LaTeX: v(t)= 20\cos(100t+50^{\circ})Vv ( t ) = 20 cos ⁡ ( 100 t + 50 ∘ ) V LaTeX: i(t)=15\cos(100t-5^\circ)Ai ( t ) = 15 cos ⁡ ( 100 t − 5 ∘ ) A What is the power angle? Submit your answer in degrees, while omitting the unit.

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 higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery