Answer:
(A) Maximum voltage will be equal to 333.194 volt
(B) Current will be leading by an angle 54.70
Explanation:
We have given maximum current in the circuit ![i_m=385mA=385\times 10^{-3}A=0.385A](https://tex.z-dn.net/?f=i_m%3D385mA%3D385%5Ctimes%2010%5E%7B-3%7DA%3D0.385A)
Inductance of the inductor ![L=400mH=400\times 10^{-3}h=0.4H](https://tex.z-dn.net/?f=L%3D400mH%3D400%5Ctimes%2010%5E%7B-3%7Dh%3D0.4H)
Capacitance ![C=4.43\mu F=4.43\times 10^{-3}F](https://tex.z-dn.net/?f=C%3D4.43%5Cmu%20F%3D4.43%5Ctimes%2010%5E%7B-3%7DF)
Frequency is given f = 44 Hz
Resistance R = 500 ohm
Inductive reactance will be ![x_l=\omega L=2\times 3.14\times 44\times 0.4=110.528ohm](https://tex.z-dn.net/?f=x_l%3D%5Comega%20L%3D2%5Ctimes%203.14%5Ctimes%2044%5Ctimes%200.4%3D110.528ohm)
Capacitive reactance will be equal to ![X_C=\frac{1}{\omega C}=\frac{1}{2\times 3.14\times 44\times 4.43\times 10^{-6}}=816.82ohm](https://tex.z-dn.net/?f=X_C%3D%5Cfrac%7B1%7D%7B%5Comega%20C%7D%3D%5Cfrac%7B1%7D%7B2%5Ctimes%203.14%5Ctimes%2044%5Ctimes%204.43%5Ctimes%2010%5E%7B-6%7D%7D%3D816.82ohm)
Impedance of the circuit will be ![Z=\sqrt{R^2+(X_C-X_L)^2}=\sqrt{500^2+(816.92-110.52)^2}=865.44ohm](https://tex.z-dn.net/?f=Z%3D%5Csqrt%7BR%5E2%2B%28X_C-X_L%29%5E2%7D%3D%5Csqrt%7B500%5E2%2B%28816.92-110.52%29%5E2%7D%3D865.44ohm)
So maximum voltage will be ![\Delta V_{max}=0.385\times 865.44=333.194volt](https://tex.z-dn.net/?f=%5CDelta%20V_%7Bmax%7D%3D0.385%5Ctimes%20865.44%3D333.194volt)
(B) Phase difference will be given as ![\Phi =tan^{-1}\frac{X_C-X_L}{R}=\frac{816.92-110.52}{500}=54.70](https://tex.z-dn.net/?f=%5CPhi%20%3Dtan%5E%7B-1%7D%5Cfrac%7BX_C-X_L%7D%7BR%7D%3D%5Cfrac%7B816.92-110.52%7D%7B500%7D%3D54.70)
So current will be leading by an angle 54.70
Answer:
correct me if i'm wrong but i think it's false
Explanation:
Answer:
3) the pressure drop across high MERV filters is significant.
Explanation:
MERV (Minimum-Efficiency Reporting Value) is used to measure the efficiency of filter to remove particles. A filter of high MERV can filter smaller particles but this causes an increase in reduced air flow that is an increase in pressure drop. High MERV filters capture more particles causing them to get congested faster and thereby increasing pressure drop.
Excessive pressure drop can cause overheating and lead to damage of the filter. The pressure drop can be reduced by increasing the surface area of the filter.
Answer:
(a) Surface energy is greater than grain boundary energy due to the fact that the bonds of the atoms on the surface are lower than those of the atoms at the grain boundary. The energy is also directly proportional to the number of bonds created.
(b) The energy of a high-angle grain boundary is higher than that of a small-angle grain boundary because the high-angle grain boundary has a higher misalignment and smaller number of bonds than a small-angle grain boundary.
Explanation:
(a) Surface energy is greater than grain boundary energy due to the fact that the bonds of the atoms on the surface are lower than those of the atoms at the grain boundary. The energy is also directly proportional to the number of bonds created.
(b) The energy of a high-angle grain boundary is higher than that of a small-angle grain boundary because the high-angle grain boundary has a higher misalignment and smaller number of bonds than a small-angle grain boundary.