Which of the following are true:
A). 1 and 2
B). {x: x >3, x ?0} ? ?
C). {x: x2-1= 0, x ?N} ? {-1, 1}
D). {x: x2 - 4x + 3 = 0} = {1, 3}
2. Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?
3. If A = {4n -3n -1: n ? N} and B = {9(n-1): n ? N}, then we have
5. __________ pumps are a group of vacuum pumps.
7. Fluid flow in a/an __________ is an example of pressure flow.
8. The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
9. A supercritical boiler is one that operates above the pressure and temperature of following values