Rank the transformers on the basis of their rms secondary voltage.

Rank from largest to smallest. To rank items as equivalent, overlap them.

#1

Vp=240V
Np=1000turns
Ns=2000turns

#2

Vp=480V
Np=4000turns
Ns=2000turns

#3

Vp=480V
Np=2000turns
Ns=1000turns

#4

Vp=120V
Np=500turns
Ns=2000turns

#5

Vp=240V
Np=1000turns
Ns=500turns

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.