ANSWERS
- Do Not Copy Answer From Another Post I Need Unique Answers Do Not Copy Answers From Another Post I Need Unique Answer 1 (49.1 KiB) Viewed 36 times
ANSWERS
PART (B): (1) A balanced 60 Hz three-phase Y-Y , 3-wire system is connected to measure power using the two-wattmeter method of Figure 4.6. The line-to-line voltage is 208 volts RMS. The positive (non-zero) readings of the wattmeters are WA= ............... Watts and Wc Watts. The line-current magnitude is I= .......... Amps. For values of I, WA and Wc selected by you, determine a)The total average power P Watts b)The power-factor of the load PF c) The load impedance z = 2... ° Ohms (2) A A-connected balanced load has the value ZA= .... + j ....... Ohms. is connected to a balanced Y-connected source and the line-current magnitude is ..........Amps. For values of Z, and I selected by you, determine : a) The impedance of an equivalent Y-connected load I= Zy = .........tj. ......ohms b) The Phase-voltage magnitude of the source Vph = .Volts RMS
To DSO Ch 2 Permanent connections not to be removed Lohse Cable To DSO Gad CE VI To DSO Ch 1 Variac Fuse status Indicator lamps 4. Wire Harness Job G OR CV VT Terminal Box THREE PHASE LOAD UNIT OR PR QR OY B OGO OGO 2050 Y BLU CTA R Y BLU B Q 120 9 Transformer Box OY ROY... ਕਰ G O VT: ही OG No Connection VG VG knob 0-120volts 3-Phase VARIAC wi Wattmeler W IN OUT W Wattmeter W IN OU Figure 4.6: Detailed connections for 3-phase power measurements. [Load Unit connected for Resistive load]