3. Explain with neat diagram of instrument for the measurement of sunshine hours.

Q2

A metallic wire is stretched from original length of 2 m to 5 m. If the original cross-sectional area is 4 square millimeters and original resistance is 8 ohms, determine the new resistance (in ohms) of the metallic wire. Assume the volume of the wire is preserved.

Hello Sir.Good Night. I have a question in my home work related Control System Lesson. The following below is my question.Please advise, Thank you so much.

During the Wheatstone Bridge experiment, when the pointer is at the balance point then: O a. The potential difference across the unknown resistance is equal to the potential difference between the end of the wire connected to the known resistance.the balance point. O b. The potential difference across the known resistance is equal to the potential difference between the balance point and the point of contact between the known andunknown resistances. O c. The potential difference across the unknown resistance is equal to the potential difference across known resistance. O d. The potential difference across the unknown resistance is equal to the potential difference between the balance point and the end of the wire connected to the unknown resistance. O e. The potential difference across the unknown resistance is equal to the potential difference between the balance point and the end of the wire connected to the known resistance. Clear my choice

The following elements are shown in the circuit in the figure R1 = 10, R2 = 10, R3 = 5 and R4 = 5, which must be calculated using the multiplication factor 1.2 [kQ]. It is also known that C1 = 6 [uF], C2 = 12 [µF], ɛ1 = 60 [V] and ɛ2 = 10 [V]. Considering that the switch closes at t = 0 [s] while the capacitors are found downloaded. Determine for a time equal to the time constant of the circuit (t = t [s]): a. The energy dissipated per second in resistor R1. b. The potential difference between points “a" and "d", that is, Vad. c. Graph and analyze the voltage of the capacitor from the moment the switch and considering that after 5 time constants it reopens and remains open. Consider that the capacitors begin to discharge when opening the switch.

Three resistors R1, R2 and R3 are connected in parallel. R1=1000 Ohm, R2=100 Ohm and R3=700 Ohm. The total resistance is: Select one: a. 321.42 Ohm b. None of the above c. 276.92 Ohm d. 80.45 Ohm e. 235.29 Ohm

4) The switch S in the circuit shown is closed at t=0. a)- Find the currents i:, iz, is just after the switch is closed. b)- Find the currents i,, iz, is long time after the switch is closed. Ignore the internal resistance of the battery. E = 36 V R1 = 40 Rz = 20, L= 20 mH.

power system  please answer as soon as possible

Q3: Is it preferable to have an insulating material with a high tand or a low tand use in :(1) Low voltage cables, and (2) High voltage cables? Give reasons for your answer.