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A 230-V, single-phase, 60-Hz source supplies two loads in parallel. One draws 10 kVA at a lagging power factor of 0.80 and the other draws 6 kW at a lagging power factor of 0.90. Compute the source current.
The binding of the hydrophobic amino acid tryptophan to a protein shows a pronounced hydrophobic effect. The thermodynamic data for the binding of is given below calculate ?
A Carnot cycle operating between 600 °C and 25 °C absorbs 1000 kJ of heat from the high-temperature reservoir. The work produced is used to power another Carnot cycle which transfers 1000 kJ of heat from 600 °C to a reservoir at higher temperature..
A storage tank is purged continuously with a stream of nitrogen. The purge stream leaving the tank is saturated with the product stored in the tank.
Acetone of at least 95 mol% purity is wanted, and the aqueous effluent must not contain more than 1 mol% acetone. The feed will be a saturated liquid. Estimate the number of ideal stages required.
Discuss the consequent effects on the real and reactive power losses, and on the voltage drop across the series impedance of the transmission system.
Determine the kVA rating of the synchronous motor.
Which of the three variables above currently limits the EQE of quantum dot-based LEDs to about 1%? Why are all-inorganic devices desirable rather than hybrid organic-inorganic devices?
Assuming RS = 0 and the source voltage to vary between 120 and 75 V, for a load resistance of 1000 Ω, determine the maximum value of the regulator resistor R if it is desired to maintain the load voltage at 60 V. Also find the required power ratin..
Write four balanced equations for this system. Identify where any constitutive equations may be required for the modelling processes.
All other conditions are the same as those specified in Example 5 of this chapter, except that Bi is not given. 8. Present a detailed derivation of Eq. (481 in this chapter, using, as a starting point, any of the other equations that are given.
determine the diode current and voltage and the power delivered by the voltage source. The diode characteristic is given in Figure P7.2.14 (b).
Plain carbon steel would be a suitable material for the tanks, but it is essential that the polymer does not become contaminated with iron in storage. Suggest some alternative materials of construction for the tanks.
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