Carrier density in channel Qon is scaled by 1. Carrier density is given by C0*Vgs where C0 is scaled by β and Vgs is scaled by 1/β.
12. Channel resistance Ron is scaled by
a) α
b) β
c) 1
d) α2
Answer: c
Channel resistance Ron is scaled by 1. Channel resistance is given by (L/W)*(1/Qonµ).
13. Gate delay is given by
a) Ron/Cg
b) Ron * Cg
c) Cg/Ron
d) Cg2 /Ron
Answer: b
Gate delay Td is given as the product of Ron, channel resistance and Cg the gate capacitance.
14. Maximum operating frequency is scaled by
a) α/β
b) β/α
c) α2 /β
d) β2 /α
Answer: c
Maximum operating frequency f0 is scaled by α2/β. This is given by (W/L)*(µ*C0*Vdd/Cg).
15. Saturation current is scaled by
a) α
b) β
c) 1/α
d) 1/β
Answer: d
Saturation current Idss is scaled by 1/β. This is given by (Co*µ/2)*W/L*(Vgs-Vt)2 .
16. Vgs is scaled by
a) α
b) β
c) 1/α
d) 1/β
Answer: d
Gate to source voltage Vgs is scaled by 1/β. All voltages are scaled by 1/β.
17. Current density J is scaled by
a) α/β
b) β/α
c) α2/β
d) β2/α
Answer: c
Current density J is scaled by α2/β. Current density is given by Idss/A where Idss is scaled by 1/β and area A by 1/α2.
18. Power dissipation per gate is scaled by
a) 1/α
b) 1/β
c) 1/α2
d) 1/β2
Answer: d
Power dissipation per gate is scaled by 1/β^2. This is the sum of static component Pgs and dynamic component Pgd.
19. Power dissipation per unit area is scaled by
a) 1/α
b) 1/β
c) β2/α2
d) α2/β2
Answer: d
Power dissipation per unit area Pa is scaled by α2/β2. This is given by Pg/Ag where Pg is scaled by 1/β2 and Ag by 1/α2.
20. In the constant voltage model, the saturation current is scaled by
a) α
b) β
c) 1
d) β2
Answer: c
Saturation current is scaled by 1 in the constant voltage model. This is because saturation current is scaled by 1/β and here in the constant voltage model β is 1.
