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Unformatted text preview: ECE211— 001 Test #3 March 31, 2006 Print Name By signing I am stating that I have taken this quiz in accordance with the
NCSU honor code. Signature 1. For the circuit above, a load is connected between terminals a & b. Find the load
impedance required for maximum power delivered to the load. Vi :bﬂmoy j 3 21K : “3L mt: *V + (33 + (9)038 ﬂDUjQ = D 1 0008(4t)V 2. For the circuit above, ﬁnd the steady state voltage, Vx(t). Z§reg zap SQ?€C@®S\—V\Q(\ [— mclodw C. 3. a) At 440 VRMS a 2 terminal load draws 3000 VA at a power factor of 0.9 lagging. Find ?05 4 h.— the load impedance. 3 1 ill. , Llle 2 30002935 8“
2* 219 b) Given a circuit with Thevinin Voltage of 10<45° VRMS and Thevinin impedance of 10
+ j 15 Q is connected to a capacitive load 6 — j3 Q, ﬁnd the real power delivered to the
load and the power factor of the load (include leading or lagging). ﬁrm )LY’WB: MSW pf = CObt QQ). ioo lagging l); : ° qul {AK QOtPQUle. + 5cos(20t) V 3. For the circuit above, convert to the frequency domain. Find the phasor open circuit
voltage, 170C. (Vm, can be in expressed in polar or rectangular form) KVL L2H +0 +JlOA” lboL‘ 3 —S ‘l ’— (i\ : ‘ffoalgﬂb IO*\3% KULR’V‘ r‘ ' ,‘l  "dbl—1— .:
VOQ + blbxlm‘ \l ’bﬁjg Q 5. For the circuit above, write 2 equations with the 2 unknowns I71 and f2 . You do not need
to simplify! ...
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This note was uploaded on 03/31/2008 for the course ECE 211 taught by Professor Ceciliatownsend during the Spring '08 term at N.C. State.
 Spring '08
 CeciliaTownsend

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