Test de evaluare 1. Pentru fiecare cerință de mai jos, încercuiți litera corespunzătoare răspunsului corect:
1. Instruirea introductiv generală se face de către:
a) serviciul comercial;
b) serviciul mecano-energetic;
c) şeful departamentului producție;
d) un lucrător al serviciului intern de prevenire şi protecție.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false