Answer:
D
Explanation:
in series circuit the resistance is divided Total resistance is equal to the sum of resistances
Answer:
Explanation:
This will be possible when setting them up in summer with a certain quantity of sag, they have already know that the cables won't be able to sag any further because of the heat. During winter, when the cables contract because of the cold weather, the sag will therefore be reduced, but much tension will not be put on the cables.
Answer: 76.3 ° C
Explanation:
Outside Distance = 10 m
Outside diameter, d = 2.2 m
R=D/2 = 2.2/2= 1.1 m
inner radius, Rs = = 1.1 m
Surface Temperature Ts = 20°C
Given that the thermal conductivity of soil, K = 0.52 W/mK
We can find the outside temperature of the container by finding the thermal temperature of conductor, T, and then summing up with the surface temperature
That is (T + Ts)
we know amount of heat, Q is given by :
Q = [(T-Ts) / (R- Rs)/4πKRRs
500 = T-20 [4π×0.52×1.1×10] / (10-1.1)
500= T-20 (71.88/8.9)
500 = T-20 (8.08)
500 = 8.08T - 161.6
8.08T = 500 + 161.6
8.08T = 661.6
T = 76.33 ° C
The cable outside diameter and the conduit inside diameter.
Answer:
Plumbing using a one-way check valve to stop water flowing back on a pump when the pump shuts off.
Explanation:
Diodes are like check valves, keeping current from flowing both ways. Used to create d.c. out of a.c by rectification. Also to block flow if d.c. power like a battery is hooked up in reverse polarity.