A diode has $w_{d o}=0.4 \mu \mathrm{m}$ and $\phi_{j}=0.85 V$. (a) What reverse bias is required to triple the depletion-layer width? (b) What is the depletion region width if a reverse bias of 7 V is applied to the diode?

As compared to a silicon rectifier diode, an LED has an
a. Lower forward voltage and lower breakdown voltage
b. Lower forward voltage and higher breakdown voltage
c. Higher forward voltage and lower breakdown voltage
d. Higher forward voltage and higher breakdown voltage

What is knee voltage and breakdown voltage?

Each capacitor in the combination shown in Figure has a breakdown voltage of $15.0 \mathrm{~V}$. What is the breakdown voltage of the combination?

The width of a squarebased storage tank is 3 m less than its height. The tank has a capacity of $20 \mathrm{m}^{3}$. If the dimensions are integer values in metres, what are they?

An arithmetic progression has first term a and common difference 10. The sum of the first n terms of the progression is 10 000. Express a in terms of n, and show that the nth term of the progression is $\frac{10000}{n}+5(n-1)$. Given that the nth term is less than 500, show that $n^{2}-101 n+2000<0$ and hence find the largest possible value of n.

The domains of these functions are the set of all positive real numbers. Find their ranges. (a) f(x) = 2x + 7 (b) f(x) = -5x (c) f(x) = 3x - 1 (d) $f(x)=x^{2}-1$ (e) $f(x)=(x+2)^{2}-1$ (f) $f(x)=(x-1)^{2}+2$

According to NACE’s April 2014 Salary Survey, engineering majors held 8 of the top 10 spots on the list of top-paid majors for the Class of 2014 bachelor’s degree graduates. Graduates in petroleum engineering were the highest paid at $93,500, earning$28,000 more than the next highest paid at $67,300. Civil engineering graduates were the tenth highest paid at$62,100. Assuming the starting salary of petroleum engineering graduates stays the same for the next 10 years, what annual increase in pay would be required for civil engineering graduates to receive the same starting salary as that of petroleum engineering graduates?

A diode has $I_S = 0.2$ fA and n = 1. (a) What is the diode current if the diode voltage is 0.675 V? (b) What will be the diode voltage if the current increases by a factor of 3?

Are all even-degree polynomial functions even? Are all odd-degree polynomial functions odd? Explain.

A diode has $I_{S}=10^{-16}$ A and n =1. (a) What is the diode voltage if the diode current is 250 $\mu \mathrm{A}$ at $T=25^{\circ} \mathrm{C}$? (b) What is the diode voltage at $T=85^{\circ} \mathrm{C}$? Assume the diode voltage temperature coefficient is −2 mV/K at $55^{\circ} \mathrm{C}$.

A diode has $I_{S}=20$ fA and n = 1. (a) What is the diode voltage if the diode current is $100 \mu A$ at $T=25^{\circ} \mathrm{C}$? (b) What is the diode voltage at $T=50^{\circ} \mathrm{C}$? Assume the diode voltage temperature coefficient is −1.8 mV/K at $0^{\circ} \mathrm{C}$.

Decide whether each relation defines y as a function of x. Give the domain and range. xy=2