Mechanical Engineering question and answers for July 18, 2023
- Q 2. A centrifugal pump running at 750 rpm with a 1-m-diameterimpeller generatesthe following pressure rise and flow rate data while pumpingwater at room temperature:?(dot)[m^3/s]= [0, 0.0278, 0.0417, 0.0556, 0.0694, 0.0833,0.0903,...
- Q The inside temperature of a wall in a dwelling is 19°C. If theair in the room is at 21°C, what is the maximum relative humidity,in percent, the air can have...
- Q 1. For airflow through a fan, the mechanical energy balance withfan work along with conservation of mass are:-W(dot)fan=sum((m(dot)_exit)*(e_exit)) -sum((m(dot)_inlet)*(e_inlet))so...0=sum(m(dot)_exit) - sum(m(dot)_inlet)Using the mechanical energy balance and conservation of mass,show that...
- Q A heat engine running backward is called a refrigerator if itspurpose is to extract heat from a cold reservoir. The same enginerunning backward is called a heat pump if its...
- Q a. Outline the approach Business Process Re-engineering (BPR)advocates regarding organization design.  b.What are the key benefits considered forthcoming from thisapproach?
- Q Please describe in great detail how to determine is a Conductivemedium dispersive or dispersionless?
- Q air at a temperature of 500c id compressed at a constantpressure of 1.2mpa from a volume of 2cu meters to volume of 0.4 cumeters. If the initial internal energy decrease...
- Q Write a conclusion to answer the following question. Whathappens to make electrical current flow in a generator?Include these ideas:a. The magnetic fieldb. The movement of the magnetc. The description of...
- Q If the line of best fit for your torque speed curve is describedby the following equation, calculate the no-load speed of themotor. T= -0.021x+0.32
- Q 1. What is ABNORMAL EVENTS?2. What is MODIFICATIONS?3. What is CERTIFICATE OF RELEASE TO SERVICE?4. Who is TYPE DESIGN ORGANIZATION? GIVE SAMPLE5. What is the difference between CONFIGURATION DEVIATION LIST...
- Q Explain Failure mode effect analysis (FMEA) .When you designseat of rickshow.
- Q Estimate the number for stages required for the turbine which isa multi-stage axial turbine designed with impulse stages andoperating with an inlet pressure and temperature of 6 bar and 900...
- Q This is problem 7-15 from El-Wakil’s Powerplant Technology book-- a spray pond is used to cool a 200-MW powerplant that has a 39percent efficiency. The condenser cooling water outlet temperatureis...
- Q Â What is the importance of ice protection on the aircraft and what do you think is the best way to prevent ice forming on the aircraft on ground and inflight?
- Q This is problem 7-3 from El-Wakil’s Powerplant Technology book-- a natural-draft cooling tower is 450 ft high. Air enters thetower at 14.696 psia, 50°F, and 50 percent relative humidity andleaves...
- Q This is problem 6-9 from El-Wakil’s Powerplant Technology book-- consider for simplicity an ideal Rankine cycle with turbineinlet and exit steam at 2500 psia and 1000°F, and 1 psia,respectively, and...
- Q This is problem 6-6 from El-Wakil’s Powerplant Technology book-- consider a powerplant operating on an ideal Rankine cyclewithout feedwater heating. Steam enters the turbine saturated at1000°F at the rate 5x106...
- Q Please derive the full expression of the rotationmatrices R123(φ, θ, ψ) and R321(ψ, θ, φ).
- Q Derive the expressions for maximum rate of climb, (?? ?? ?)?????? and the velocity at maximum rate of climb, ??(?? /C )??????for propeller-driven and jet-propelled A/C.
- Q A Carnot-cycle refrigerator rejects heat at the pressure of 1000kPa during which the working fluid R -134a changes from saturatedvapor to saturated liquid. The heat is added to the cycle...
- Q A spherical shell of wood with thermal conductivity of 0.13W/m.K and an inner and outer radius of 10 cm and 20 cm respectivelycontains a mixture of water and water vapor(100...
- Q The following system is a small power generating plantwhich contains a boiler, a superheater, a turbine and a condenser.Describe each part of the system with reference to the equationsrequired in...
- Q Â Case StudyIn Francisco Automotive Manufacturing Plant, a large number of engineering activities are carried out in a wide range of areas. These activities include design, production of parts, assembly, testing,...
- Q Â CASE STUDYIn the Appliances Manufacturing Plant, a large number of engineering activities are carried out in a wide range of areas. These activities include design, production of parts, assembly, testing,...
- Q Â Case StudyIn Francisco Automotive Manufacturing Plant, a large number of engineering activities are carried out in a wide range of areas. These activities include design, production of parts, assembly, testing,...
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