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A 10-kW, 230-V shunt generator, with an armature-circuit resistance of 0.1 Ω and a field circuit resistance of 230 Ω, delivers full load at rated voltage and 1000 r/min. If the machine is run as a motor while absorbing 10 kW from 230- V mains, find the speed of the motor. Neglect the brush-contact drop.
If the pounds of water evaporated per pound of steam equals 0.85 x number of effects, determine the optimum number of effects for minimum annual cost.
One gram-mole of methyl chloride vapor is contained in a vessel at 100°C and 10atm. (a) Use the ideal gas equation of state to estimate the system volume.
A horizontal steel pipe having inner and outer diameter as 150 and 180 mm respectively is lagged with 50 mm thickness of 85% magnesia insulation inside ,which has flue gas flowing at 260oc
HEAT TRANSFER PROBLEM NO 17- An asbestos pad, square in cross section , measure 0.05 m on a side and increases linearly to 0.1 m on the other end ( see the figure given below.
What are the biggest risks to the child? How are they controlled
Steam at 100°C is passed into a condenser at a rate of 500 kg/h and leaves as water at 60°C. If the condenser is supplied with cooling water which enters at 20°C and leaves at 40°C, calculate:- how much heat per hour is extracted from the steam.
Calculate the feed rate F and the product rate - Evaporation in Double-Effect Reverse-Feed Evaporators.
Nitrogen is compressed adiabatically in a closed system from initial pressure P1 = 1 bar, T1 = 5 °C to P2 = 5 bar. Due to irreversibilities there is an entropy generation equal to 4.5 J/mol K. Calculate the temperature at the end of the comp..
The batch fermentation of glucose to glutamic acid using Brevibacterium divaricate is described in detail in US patent 2,978,384. In Example I in the patent a 10.5 wt% glucose feed was fermented for 72 hours at 30 °C
Describe how the business will operate. Plan and cost the employee requirements. What is required and how to pay them? Describe the facilities and equipment plan and technology plan? Also prepare an organizational chart that depicts the company's str..
What will be the percentage increase of the radiation coefficient hr under the changed conditions?
A chemical company is considering replacing a batch-wise reactor with a modernized continuous reactor. The old unit cost $40,000 when new 5 years ago, and depreciation has been charged on a straight-line basis using an estimated service life of 15..
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