Answer:
a) In turbulent flow, the tubes with rough surfaces have much higher friction factors than the tubes with smooth surfaces.
Explanation:
Turbulent flow is a type of fluid flow in which fluid will undergo irregular fluctuations. The tubes with rough surfaces have higher friction factors than the tubes with smooth surfaces. In laminar flow the effect of effect of surface roughness is negligible on friction factors.
Answer:
a) 0.42
b) Independent
c) 30%
d) 0.88
Explanation:
Person chooses Chicken's item : 70% = 0.7
Person chooses fish's item : 30% = 0.3
Visits in which he orders Afghani Chicken = 60% = 0.6
a)
Probability that he goes to KARIM and orders Afghani Chicken:
P = 0.7 * 0.6 = 0.42
b)
Two events are said to be independent when occurrence of one event does not affect the probability of the other event's occurrence. Here the person orders Afghani Chicken regardless of where he visits so the events are independent.
c)
P = 0.30 because he orders Afghani Chicken regardless of where he visits.
d)
Let A be the probability that he goes to KARIM:
P(A) = 0.7 * ( 1 - 0.6 ) = 0.28
Let A be the probability that he orders Afghani Chicken:
P(B) = 0.3 * 0.6 = 0.18
Let C be the probability that he goes to KARIM and orders Afghani chicken:
= 0.7 * 0.6 = 0.42
So probability that he goes to KARIM or orders Afghani Chicken or both:
P(A) + P(B) + P(C) = 0.28 + 0.18 + 0.42 = 0.88
Answer:
a) three 6.8 V zener provide 3*6.8=20.4 V with 3*10=30Ω resistance neglecting R, we have load regulation =-30 mv/ma
b) for 5.1 v zener we use 4 diodes to provide 20.4 V with 4*25=100Ω resistance load regulation =-120 mv/ma
Answer:
a. 10bits
b. 7 bits
c. 6 bits
Explanation:
a. for 0 to 512
# of numbers = 512 - 0 + 1 =513
[log ₂513] = 9 bits
we actually need 10 bits
b. for 0 to 75
# of numbers = 75 - 0 + 1 =76
[log ₂76] = 6 bits
we actually need 7 bits
c. for -20 to 13
# of numbers = 13 - (-20) + 1 =34
[log ₂34] = 5 bits
we actually need 6 bits
