R0 = 0.11?; and P is the power dissipated in the resistive element of the fuse. Determine the rated current at which the fuse will melt (that is, “blow”) and thus act as an open-circuit.
The resistive elements of fuses, lightbulbs, heaters, etc., are non-linear (i.e., the resistance is dependent on the current through the element). Assume the resistance of a fuse (Figure P2.45) is given by
R = R0[1 + A(T ? T0)] where: T ? T0 = kP;
T0 = 25°C; A = 0.7[?C]?1; k = 0.35°C/W;
(Hint: The fuse blows when R becomes infinite.)
What will be an ideal response?
You might also like to view...
What are at least two disadvantages to using single-phase motors?
What will be an ideal response?
A thrust washer is used to control end ____________________.
Fill in the blank(s) with the appropriate word(s).
The Department of Energy's ____ Laboratory has developed maps showing the amount of solar exposure throughout the US, which can be used to determine the amount of energy you can expect to generate in any part of the country.
A. Solar Resource B. National Renewable Energy C. National Solar Mapping D. Solar Energy
The amount of resistance compared with the inductive reactance determines the _____ of the coil.
A. power factor (PF) B. quality (Q) C. phase angle (?) D. reactance (X)