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Suppose the rails in Figure 10.5a have a resistance r[Ω/m] each. The bar is perfectly conducting. Calculate the current in the resistor R at a time t if the bar starts at t = 0 at x = 0 (x = 0 is at the location of R) and moves at constant speed v in the negative x direction.
Negligible heat is transferred from the nozzle to its surroundings. The approach velocity of the steam is negligible. The specific enthalpy of steam is 2974J/kg at 260°C and 7bar and 2860kJ/kg at 200°C and 4bar. Use the open-system energy balance ..
Acetylene (C2H2) and butane (C4H10) are gaseous fuels with enthalpies of combustion of 49.9 kJ/g and 49.5 kJ/g, respectively. Compare the energy available from the combustion of a given volume of acetylene to the combustion energy from the same ..
A chord subtends an angle of 68° at the centre of a circle of radius 200mm. Find the length of the chord.
The following sequences of reactions are to occur in a constant density reactor. Which type of continues flow-reactor would be best to maximize the selectivity for product C?
Apply linear programming to this problem. A firm wants to determine how many units of each of two products (products X and Y) they should produce in order to make the most money. The profit from making a unit of product X is $190 and the profit fr..
Ac measurements with constant voltage amplitude reveal that the total core loss of a certain magnetic circuit is 10 W at f = 50 Hz, and 13 W at f = 60 Hz. Find the total core loss if the frequency is increased to 400 Hz.
Find the charge flowing, and the number of electrons per second that are passing some point in the wire.
A silicon diode is forward-biased with V = 0.5 V at a temperature of 293 K. If the diode current is 10 mA, calculate the saturation current of the diode.
If the generated emfs are 200 and 210 V, respectively, determine the load voltage and the armature current of each machine.
How much heat must be added to the contents of the vessel so that the liquid water is just evaporated?
Calculate the instantaneous and rms values of the voltage induced in a 150-turn coil on the armature, if the axial length of the armature and its inner diameter are both 100 mm.
what are the 95 percent precision limits for total flow, and the 95 percent confidence interval for total flow?
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