Quiz Model Answer(C)

,r' Cairo University Faculty of Engineering Depaft ment of Electronics and Cornmuaicat;ons Engine€r;ng 6izo Campus Electronics(1)- ELC101(B) Quizl-May2013 Time allowed : 75 Minutes Number of Pages: 5 Question 1( 7 Point ). Put a circle around the letter corresponding to the best answer for each of the following. Each MCQ is of 0.5 point grade. For the circuit in Fig.1: Vtn=1V, pn*cox=20pA lV2,L= 1um for all transistors, W1=W2=10um,and W3=W4 = 40um, neglect channel length effect ( l,=0) {s-r--o Q, s^t 1.. 12= a)0.45mA. @o.s'n. c) 0.225 mA. d) None ofthe above. t i l i I t ,_-_*l 2. V2=..................... 6lz.sv. b) 1.sv. c) 1V. d) None ofthe above. 3. lf width of transistors Q3 and Q4 increases by the same value, then ........... Tn,, - * ^ a) 12will increecp and\/?*rill lnrraeco *Y4= t'l'JhA a) 12 will increase, and V2 will lncrease. b) 12 will decrease, andV2 will decrease_ , @Zwill increase, and V2 will not change . K d) None ofthe above. Note: This change in width of e3 doesn't affect its region of operation. = ry/l>, o,3 = 4ct -vr*w)z Srrbsfifae in @ *t),: o)25 aQrh^,= oAt- - u o/,), ' tvlrar U3 incft^ror K{i bclrre-n wdth oD e3 tl^.& uilfl, ope, Uitl lncy.*S 7/s >- 'i1tqt= o,,J n a /t'l 1o aS5nme ur= [r ttr= €o t|n Terlvt. L--=--__l \ '^A&' Colc'ttl l< /z o$o,n :D

Quiz Model Answer(C)

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