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Consider a three-phase induction motor with a normal torque-speed characteristic. Neglecting the effects of stator resistance and leakage reactance, discuss the approximate effect on the characteristic, if:
(a) The applied voltage and frequency are halved.
(b) Only the applied voltage is halved, but the frequency is at its normal value.
Calculate the required value of Ta1 if the film temperature falls to 34°C, and the value if it rises to 36°C.
The time-average value of the induced voltage. (e) The induced voltage when the plane of the coil is 30° from the vertical.
What is the confidence interval for probability levels of 0.95 and 0.99?
At a pressure of 10 bar, determine the bubble and dew point of a mixture of hydrocarbons, composition, mol%: n-butane 21, n-pentane 48, n-hexane 31. The equilibrium K factors can be estimated using the De Priester charts in Dadyburjor (1978) or fo..
Consider the analogy between electrical and hydraulic systems given in Table 1.5.2. Obtain the mass balance equation by equating the rate of change of fluid volume to the net difference between input and output flow. Identify this equation with th..
What mass of ethylene glycol, HOCH2CH2OH, must be dissolved in 4.510 kg of water to result in a freezing point of 18.0°C? What is the boiling point of the same solution?
Use the Gibbs phase rule to determine how many degrees of freedom exist for the system at equilibrium. State the meaning of your result in your own words.
i need 1 page about this book( engineering and chemical thermodynamic 2nd edition )what learn form this problem in book: 4.44 , 4.48 , 5.2 ,5.9 ,5.10, 5.29 ,5.39 ,5.46 ,6.19 ,6.44 ,6.52 .6.54 ,7.18 ,7.29 ,7.45 ,7.50 ,7.54 , 8.19 ,8.20 summarize yo..
An alternative process for converting benzene to cyclohexane also uses a supported noble metal catalyst, but carries out the reaction in the liquid phase, at a temperature of 160 °C and pressure of 100 bare, in a slurry reactor.
Safety considerations require that the maximum steady-state temperature of the system remain below 475°C. Will a spherical container with inner and outer diameters of 1.0 m and 1.2 m, respectively, satisfy this requirement?
(1) Determine the mass and the temperature of the steam in an insulated piston-cylinder arrangement if sufficient steam is admitted to displace the piston by one cubic foot. The cylinder originally is empty, and the piston main- tains a constant pres..
What is the compressibility exponent for the cake if the resistance of the filter medium is negligible?
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