A microwave with ratings shown in Figure 2 is being supplied with a single phase 120 VAC, 60 Hz source. SAMSUNE HOUSEHOLD MICROWAVE OVEN 416 MAETANDONG, SUWON, KOREA MODEL NO. SERIAL NO. 120Vac 60HZ USTED MW85OWA 71NNBO0010 Kw 1.2 MICROWAVE (U a MANUFACTURED: NOMEMEER-2000 FCC ID: THIS PRODUCT COMPLIES WITH DHHS RULES 21 CFR SUBCHAPTER J. A3LMW850 MADE IN KOREA SEC Figure 2 Given that the device is operating at rated conditions and has a power factor of 0.8 lagging, a) Find the instantaneous current drawn from the source when plugged in. b) Find the equivalent impedance of the microwave as seen by the source. c) Calculate the new and improved power factor if a 250 µF capacitor is inserted in parallel with the supply. d) Draw a phasor diagram showing the following parameters after the capacitor is inserted (calculate where necessary): i. The source current, Is

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Please do c and d.

A microwave with ratings shown in Figure 2 is being supplied with a single phase 120 VAC, 60
Hz source.
SAMSUNE
HOUSEHOLD MICROWAVE OVEN
416 MAETANDONG, SUWON, KOREA
MODEL NO.
SERIAL NO.
120Vac
60HZ
USTED
MW85OWA
71NNBO0010
Kw
1.2
MICROWAVE (U 2sF
MANUFACTURED: NOVEVEER-2000
FCC ID:
THIS PRODUCT COMPLIES WITH DHHS RULES 21 CFR SUBCHAPTER J.
A3LMW850
MADE IN KOREA
SEC
Figure 2
Given that the device is operating at rated conditions and has a power factor of 0.8 lagging,
a) Find the instantaneous current drawn from the source when plugged in.
b) Find the equivalent impedance of the microwave as seen by the source.
c) Calculate the new and improved power factor if a 250 µF capacitor is inserted in parallel
with the supply.
d) Draw a phasor diagram showing the following parameters after the capacitor is inserted
(calculate where necessary):
i. The source current, Is
ii. The voltage across the inserted capacitor, Vc
iii. The current through the inserted capacitor, Ic
iv. The current through the microwave oven, IL
Transcribed Image Text:A microwave with ratings shown in Figure 2 is being supplied with a single phase 120 VAC, 60 Hz source. SAMSUNE HOUSEHOLD MICROWAVE OVEN 416 MAETANDONG, SUWON, KOREA MODEL NO. SERIAL NO. 120Vac 60HZ USTED MW85OWA 71NNBO0010 Kw 1.2 MICROWAVE (U 2sF MANUFACTURED: NOVEVEER-2000 FCC ID: THIS PRODUCT COMPLIES WITH DHHS RULES 21 CFR SUBCHAPTER J. A3LMW850 MADE IN KOREA SEC Figure 2 Given that the device is operating at rated conditions and has a power factor of 0.8 lagging, a) Find the instantaneous current drawn from the source when plugged in. b) Find the equivalent impedance of the microwave as seen by the source. c) Calculate the new and improved power factor if a 250 µF capacitor is inserted in parallel with the supply. d) Draw a phasor diagram showing the following parameters after the capacitor is inserted (calculate where necessary): i. The source current, Is ii. The voltage across the inserted capacitor, Vc iii. The current through the inserted capacitor, Ic iv. The current through the microwave oven, IL
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