Answer:
a) 0.01558 Ω per 1000 feet
b) 0.0923 Ω per mile
c) 3.57%
Explanation:
<u>a) Calculate and verify the DC resistance </u>
Dc resistance = R = р
for aluminum at 20°C
р = 17 Ωcmil/ft
hence R = 17 * 1000 / ( 113000 ) = 0.01527 Ω per 1000 feet
there when there is an increase in resistance of 2% spiraling
R = 1.02 * 0.01527 = 0.01558 Ω per 1000 feet
<u>b) Calculate the DC resistance at 50°C </u>
R2 = R1 ( )
where ; R1 = 0.01558 , T = 228 , t2 = 50, t1 = 20 ( input values into equation above )
hence R2 = ( 0.01746 / 0.189 ) Ω per mile = 0.0923 Ω per mile
<u>c ) Determine the percentage increase due to skin effect </u>
AC resistance = 0.0956 ohm per mile
Hence; Increase in skin effect
= ( 0.0956 -0.0923 ) / 0.0923
= 0.0357 ≈ 3.57%
Answer:a.Bianca:”Puiul de Urs loveste cu labele din fata in roata de cauciuc atarntata de-o sfoara”:Raspuns:Trasaturile puiului de urs sunt:jucaus,curios,interesat
b.Ingrijitoarea:”Doar un copil,asta esti matalută.Ia la mama!Stiu,usor nu ti o fi nici tie....”Raspuns:Trasaturile ingrijitoarei sunt: Iubitoare de animale,buna la suflet,adica ea este foarte atenta,impresionata de puiul de urs si de animale.
c.Mara:”Of,mama o considera si acum tot o fetita,desi a terminat facultatea in vara asta.”Raspuns:Trasaturile Marei sunt:Neintelegatoare,incapatanata,adica nu asculta de mama ei,crede ca dansa o considera tot o fetita,si fata nu este de fapt asa(ti am dat un exemplu.)
Explanation:
Answer:
a. Use datum on shaft
b. Use datum on hex flat
c. Use datum on face below the head
d. Use datum on shaft
When these datum are used, they will prevent translation and rotation along axis which they act.