A generator bus (with a 1.0 p. u. voltage) supplies a 200 MW, 80 Mvar load through a lossless transmission line with pu (100 MVA base) impedance of j0.1 and no line charging. Starting with an initial voltage guess of 1.0∡0°, iterate until converged using the Newton-Rapson power flow method. For convergence criteria, use a maximum power flow mismatch of 0.1 MVA.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.