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The synchronous speed of a wound-rotor induction motor is 900 r/min. Under a blocked-rotor condition, the input power to the motor is 45 kW at 193.6 A. The stator resistance per phase is 0.2 Ω, and the ratio of effective stator turns to effective rotor turns is 2. The stator and rotor are both wye-connected. Neglect the effect of the core loss and magnetizing impedances. Calculate:
(a) The value in ohms of the rotor resistance per phase.
(b) The motor starting torque.
The efficiency at rated load, 0.8 power factor lagging, and at half-load, unity power factor.
Table: contains six-month average price data for styrene and its feedstock's ethylene and benzene for South Korea over the period Jan. 1999 to Dec. 2010. Calculate the gross margin
Assuming that there are no other significant side reactions, calculate masses of alcohol and ether produced, per 1000 kg of allyl chloride fed to the reactor.
The air-film coefficient at the outside of the insulation may be assumed constant at 2.0 Btu/(h)(ft2)(°F) for all insulation thicknesses
Find the total line current drawn by the motor when the developed torque is one-half the rated value.
Derive an expression similar to Eq. (56) for finding the optimum exit temperature of cooling water from a heat exchanger when the temperature of the material being cooled is not constant.
Given below is the diagrammatic representation of one of the categories of small molecular weight...Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living
Let the property P;.. in Eq 5.2-1 be the scalar 1 so that the integral in that equation represents the instantaneous volume V. Show that in this case
Discuss how transmission electron microscopy (TEM) can provide information complementary to that which can be obtained from standard X-ray or neutron diffraction methods, giving suitable examples.
Determine mathematically the value and direction of a single resultant force which when acting upon the plate shown below would effectively replace the forces shown.
Combustion of Ethane: Stack Gas Molar Composition, Ethane is burned with 50% excess air. The percentage conversion of ethane is 90%. Of the ethane burned, 25% reacts to form CO and the balance reacts to form carbon dioxide
Given the reaction 2N0, + - 0, = N205, what is the relation between2the rates of formation and disappearance of the three reaction components?
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