List two different types of AC split-phase motors and briefly
explain the basic theory of operation of these motors in terms of
how they will start the motor.
1.)List and explain the two methods used to obtain the two energy
xray spectra required in DXA?
2.) Explain the concept og back projection method used in
computed tomography?
3.) What are meant by ‘window level’ and ‘window width’
a. Use mathematical induction to prove that for any positive
integer ?, 3 divide ?^3 + 2?
(leaving no remainder).
Hint: you may want to use the formula: (? + ?)^3= ?^3 + 3?^2 * b +
3??^2 + ?^3.
b. Use strong induction to prove that any positive integer ? (? ≥
2) can be written as a
product of primes.