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# t2[1] - Engr 205 Electric Circuits Second Test...

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Unformatted text preview: Engr 205 Electric Circuits Second Test 10—22-10 {\iﬂiﬁ’t’l Please: I. Show your work clearly. Work hard to follow will be down-graded. 2. Make sure all answers have appropriate units attached. Points will be taken off for lack of units. Highlight your answers with underlines or encircle them in a box. 3. Clearly mark voltage polarities and current directions in the diagram for all voltages and currents used in your work. Serious penalties if fail to do so. it Using the superposition principle, find the power associated with the 2A source. Is this power delivered or absorbed? 5).. 133A emerge twig ' i , was it!» i; a.) “39% all? 2r» or “5} Vemx 2’ ”EV 39; 3T3 v3 m x «65363;»- lw Visit! 3.: VA'VB : goggle- wetv 2. Find the power delivered by the dependent source in the circuit below. tweet V“? t targeted?“ also agree {flat-19V 30V ct beget“; ‘ \ s— , 1 Ba I LI -‘-'. étgﬂal-téeeaéa‘iﬁﬂt “’33 r 3. Find the Thevenin’s and Norton’s equivalents of the one-port circuit shown below. 1 k0 1:an E32113: EMA] to}. s «it: if, We, rut “a”; Weieéir Vg‘zf- *fgﬂ omega \$.21? "a. l 2 Reg “*3 fag; gm: Ms ................ pew-— - ' kWh-93“,”; ._ WWW. {35%. " " ’ a 'k r r H l V5; 3 a; ( 53kg r'teei ﬁﬂlﬁﬁi’ﬁmhég . I- 2 5V C9 3&9” “Tagugwri 5 £5 ’32; :3 a {we WWW eeeess W ravésa} I ( ‘ 31g:?‘f”t‘.2m ‘f’eﬁs "Eli? s l 2. rmmﬂrmkgﬁ A ,~ 4 4;: \$2an A _ _ e: may?“ “9‘ Meg?“ gmgmﬁ‘ é 05¢}; Mtpleﬂs ﬁg? ff. 5; V‘Y’ﬁ A i val-‘n-axm ﬂmwla 8 4. For the circuit shown below, ﬁnd ﬁre power transfer efﬁciency 1‘] = PL/PS where PL is power at the load {8009 resistor) and P5 is power at 1the source. The source voltage vs is 120\l2_cos{2nft) V and both transformers are idea]. 120 r 400 , V; 3‘ “3‘9 Vtwrg ...
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