Mechanical Engineering question and answers for August 09, 2023
- Q A steam power plant operates on a regenerative Rankinecycle with two feedwater heaters, one closed and one open. Steamenters the turbine at 12.5 MPa and 550ºC and exhausts to thecondenser...
- Q The atmospheric air 32 °C dry bulb temperature and 70% relativehumidity supplied to the cooling coil at a rate of 45m3 /min. Theair cooling to the saturated state and leaving...
- Q In what ways can firms using SaaSproducts dramatically lower costs associated with their informationsystems? Give one example (that a classmate has not already used intheir answer) of enterprise-focused SaaS vendors...
- Q An annealed aluminum alloy slab with a thickness of 12 mm andwidth of 1m is to be cold rolled to a thickness of 9 mm using2-high rolls with roll diameter...
- Q The mass-spring-damper system has a 2 kg block isdisplaced by an amplitude of 50 mm andreleased. Ifthc phase angle ofrcsponse is 84.17o, how many cycles(m) will be executed beforcthe amplitude...
- Q Blood flows through a ventricular assist device (a pump) at arate of 100 mL/s. It enters at a pressure of 110 kPa, temperature36.50°C, and speed 0.25 m/s. It leaves at...
- Q 3) A torsion spring is used in a hand-held spring clamp. Thejaws of the clamp are 1.5 inches from the pivot. The spring angleis 45° when the clamp is closed...
- Q A 400-MW steam power plant, which is cooled by a nearby river,has a thermal efficiency of 33 percent. (i) Sketch an appropriateillustration for this heat engine clearly showing the heat...
- Q A rigid tank contains a saturated liquid-vapour mixture of waterin an equilibrium state. The volume of the tank is 110 m3 and thetemperature of the water in the tank is...
- Q How applied mechanics terminologies such as moment, moment ofinertia and frictional matters are involved to theoretically designhydro power and wind mills for renewable energy supply? Define theterminologies in their usual...
- Q Steel Structures: The rolling process is one of the mostfrequently used forming processes for producing steel sections.Nonetheless, other forming and fabrication processes can be used tocreate a range of section...
- Q A turbine blade of solution annealed INCOLOY alloy 800 is 18 inlong and operates at 1400 degrees Fahrenheit. If the tip clearanceis 0.2 in and centrifugal forces induce an average...
- Q Give five examples and show how phychiometry play an importantrole in your daily life routine.
- Q A fire-tube boiler made from carbon steel in which fuel gasflows within the tube while the boiler feed-water along withcondensate from the plant flows on the shell-side. Visualinspection revealed heavily...
- Q AssessmentYou are required to complete a full report on the experimentcompleted by Joule and discuss the implications and significance ofJoules findings. The work should include:-ï‚· An explanation of the equipment...
- Q 1) Saturated liquid water at a pressure of 10 kPa is sent to asteam boiler with a pressure of 4MPa with a reversible adiabaticpump and heated up to 500oC at...
- Q i) A series of cold rolling operations are to be used to reducethe thickness of a metal plate from 50 mm to 20 mm in a reversingtwo-high mill. Roll diameter...
- Q Explain and discuss what stall is and what causes an airfoil tostall. Why are commercial aircraft not allowed to fly at conditionsnear stall?
- Q This is a heat transfer problem.Question is the following;You had been assigned, at General Motors, as design engineer todesign a radiator ( Heat exchanger) for a new model car ....
- Q You might be surprised to know that each year vending machineskill more people in the USA (on average) than sharks do. Identifythree different possible “accident†scenarios with vending machinesand apply...
- Q C4h10 fuel is burned in the cylinder with 150% corporate airpowered by SI engine. The temperature and pressure at the start ofcombustion are 650 K and 1900 kPa, respectively. The...
- Q Explain and discuss what stall is and what causes an airfoil tostall. Why are commercial aircraft not allowed to fly at conditionsnear stall?
- Q A 100 kW, 8-cylinder R-22 compressor with 20 kW power operatesat zero & 40 C evaporating & condensing temps. Thecompressor bore 0.07 m & stroke 0.06 m with clearance volume...
- Q A centrifugal pump has the following pressure - capacitycharacteristics:Pressure (KPa)500495490480465455420395360325285Capacity (m3h-1)0255075100125150175200225250It is planned to use this for a process having the followingsystem characteristic:Pressure (KPa)350370400435465505545595660725800Capacity (m3h-1)0255075100125150175200225250(a) Determine the operating point for...
- Q Explain the working principle of the separator step bystep (include sludge discharge process as well). Write down thedifferences between clarifier and purifier operation. Write downseparator parts and their duties. Write...
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