Exam in Circuits 2 and 3 Dc Circuits and Ac Circuit 1 phase PDF

Preview

Summary

NAME:___________________________________SN.________________________SECOND EVALUATION EXAMReview in EE"Finding the will of GOD is the greatest DISCOVERY and doing the will of GOD is the greatest ACHIEVEMENTS."Directions. Solve the following problems completely, have solutions on all...

Description

NAME:___________________________________ SN.________________________ SECOND EVALUATION EXAM Review in EE "Finding the will of GOD is the greatest DISCOVERY and doing the will of GOD is the greatest ACHIEVEMENTS." Directions. Solve the following problems completely, have solutions on all problems except for those terms. 1. A relay coil carries a polarizing current of 1 A dc and a peak ac current of 5 A at 50 hz. If a coil resistance is 5 W, what is the power dissipated by the coil in W? a) 50 b) 67.5 c) 130 d) 25 1. The power factor of the load on a 120 volt, 60 Hz source is raised from 0.707 t0 0.866 lagging by connecting a 53 micr0-farad capacitor across the load. What is the true power of the load in watts? A. 286 B. 682 C. 862 D. 268 2. In a balanced, 3-phase, wye-connected voltage source with phase sequence abc, Vab=230...