POWER ENGINERING PART B EXAM

Fish in lakes beside power plants, which use lake water for cooling, are subject to the danger of suffocation as a consequence of "thermal pollution", because _____________________.   a. dissolved oxygen decreases as temperature of the lake waters increase b. dissolved oxygen increases in the lake waters c. gas solubility increases as temperature goes up d. the power plant noise disturbs the fish

Identify the amount of enthalpy needed in order to turn steam into 450g h20 (water) that is located at a temperature of 85 degrees Fahrenheit ANS: _____ British Thermal Unit

33. An open drive condensing unit has the following factory delivered options. Compressor maximum speed 550 rpm Compressor pulley size 600mm • Factory supplied motor pulley size 200mm • Motor speed rating 1400 rpm Pre-commissioning tests suggest that the suction pressure is too high, the system capacity is below requirement, and the compressor speed needs to be increased. Assuming that the motor has an adequate power rating to drive the compressor to its maximum speed, what size motor pulley would be required to increase the compressor speed by an additional 10%? Áll calculations can be rounded to the nearest unit of 10. All calculations are to be shown.

Give the following and explain from the water treatment system a. Control variables b. Control Variables  c. System inputs d. Manipulated variables  e. Measured system inputs  f. Unmeasured system outputs g. Expected disturbances  h. Constraints that the system could be operating within

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Generally speaking there are three basic categories of attributes we desire of our refrigerants Performance (efficiency, compatibility, cost) Safety Minimal environmental impact (ODP, GWP and TEWI) Comment on these three basic categories of attributes of refrigerants.

An oil/gas separator is a pressure vessel used for separating a well stream into gaseous and liquid components. They are installed either in an onshore processing station or on an offshore platform. Based on the vessel configurations, the oil/gas separators can be divided into horizontal, vertical, or spherical separators. In a vertical tank, the heavy liquids are pumped out of the ____________ of the vessel and the light phase is drawn off the side of the tank. a. Inlet b. corner c. Bottom d. Top

Which measure does not necessarily increase the boiler efficiency? Please choice one below : Increasing combustion efficiency Decreasing temperature of the exhaust gases Minimizing heat losses Increasing air-fuel ratio None of these

How can we ensure boiler operation safety?

The temperature of a gas undergoing a continuous throttling process _______ across the throttling device   a. is constant but not necessarily zero b. is zero c. may either increase or decrease d d. none of these

Recirculated air from the indoor space is 7,500 cfm (75 degrees F dry bulb, 50% RH). Ventilation air from outdoors is 2,500 cfm (95 degrees F dry bulb, 76 degrees F wet bulb). Leaving air off the cooling coil is 10,000 cfm (55 degrees F dry bulb, 90% RH). What is the wet bulb temperature of the indoor air that is being recirculated? Group of answer choices 61.5 degrees 63.5 degrees 62.5 degrees 61 degrees

1. Use the internet and other reference materials to learn about the internal combustion engines valve system. 2. Illustrate and identify the different components of the ICES valve system. 3. Discuss the function of each component of the valve system of the ICE. 4. Explain the operation of the ICES valve system. 5. Discuss the importance of the valve system in an internal combustion engines.

i need the answer quickly

how standpipes and automatic sprinkler differ from each other as systems for fire protection?

Convert the total kilowatts per year for all appliances into equivalent amounts (pounds) of oil burned to generate this energy.  (It takes about 5.4 pounds of fuel oil to generate one kilowatt of energy.  So, pounds of fuel oil per year = kilowatts per year * 5.4)   __________________ Pounds fuel oil per year

True or False: The probable origin of a fire is most likelyclosest to the lowest point that shows the most intensecharacteristics of burning. ___________

The change of state from a gas to a solid is called _________ and the change is _______   a. Sublimation; Endothermic   b. Condensation; Endothermic   c. Deposition; Exothermic   d. Sublimation; Exothermic

Which gas leakage do you think poses a greater risk for fire? Explain

In pitot tube, the flowing fluid touches the pitot tube ________________ pressure reaches zero velocity reaches maximum velocity reaches maximum velocity reaches zero

Therapeutic Instrumentation

Well Completion : Tubing leaks is one of well completion problems. the causes and method(s) to remediate the problem.

I need solution of all parts correctly, plagiarism free.

J - Type Thermocouple is the combination of _____________ and ________________ materials.  a. Iron and Constantan  b. Aluminum and Constantan  c. Aluminum and Iron d. Iron and Aluminum

There can be more than 1 answer per item What is the purpose of having piston ring gaps?So that the temperature from the piston can be easily transferred to the cylinder wallsFor easier overhaul proceduresSo that the piston rings will have allowance in the event of thermal expansionSo that oil can freely enter the system The ideal prototype of the spark-ignition engines, constant volume combustion.Diesel cycleOtto cycleBrayton cycleCarnot cycle

Q 3 (iii) What would be the emergency procedure in case a fire breaks out in an industrial workplace?

Just explain the diagram please

Apart from providing lubrication to engine bearings, What other important function does lubricating oil perform?

Write the name of each of the following systems and its plant type (use A, B, C, D ). Condensate Induced draught fan extraction pump Hot air Air Condenser pre- heater Flue gases Econo- miser ting ump Flue gases Super heater Cooling Boiler V tower Flue gases A Diesel Engine Steam Coolant oil ing Filter Oil dwnd ILube + Voil E Water Lubricating oil jum Lubricating oil tank Oil cooler Coolant circulating pump Auxiliary oil pump Filter C