Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Computer Science Question 1 : Heat Exchanger Design Part A: Calculate the heat transfer rate required for a heat exchanger to cool 1 5 0
Computer Science
Question : Heat Exchanger Design
Part A: Calculate the heat transfer rate required for a heat exchanger to cool kghr of water from C to C Assume the specific heat capacity of water is kJkgC
Part B: Determine the logarithmic mean temperature difference LMTD for a counterflow heat exchanger if the hot fluid enters at C and leaves at C while the cold fluid enters at C and leaves at C
Part C: Calculate the overall heat transfer coefficient if the heat exchanger has an area of m
Part D: Using the effectivenessNTU method, find the number of transfer units NTU for the heat exchanger.
Part E: Determine the heat exchanger effectiveness.
Question : Gear Train Analysis
Part A: Design a gear train to achieve a speed reduction of : using three gears. Specify the number of teeth on each gear.
Part B: Calculate the torque on the output shaft if the input shaft has a torque of Nm
Part C: Determine the efficiency of the gear train if the power loss is
Part D: Calculate the stress on the gear teeth if the modulus of elasticity is GPa and the gear tooth form factor is
Part E: Find the bending stress if the face width of the gears is mm
Question : Thermodynamic Cycle
Part A: Sketch a TS diagram for an ideal Rankine cycle.
Part B: Calculate the thermal efficiency of the cycle if the steam enters the turbine at MPa and C and is condensed at kPa.
Part C: Determine the work done by the turbine per kg of steam.
Part D: Calculate the work required by the pump per kg of water.
Part E: Find the heat added in the boiler per kg of steam.
Question : Fluid Flow in Pipes
Part A: Calculate the Reynolds number for water flowing in a pipe with a diameter of mm at a velocity of ms Assume the kinematic viscosity of water is x ms
Part B: Determine the friction factor using the Moody chart if the pipe is smooth.
Part C: Calculate the head loss due to friction for a m long pipe.
Part D: Find the power required to pump the water through the pipe.
Part E: Determine the pressure drop across the pipe.
Question : Composite Beam Analysis
Part A: Design a composite beam made of steel and aluminum layers with a total depth of mm The steel layer is mm and the aluminum layer is mm
Part B: Calculate the neutral axis position of the composite beam.
Part C: Determine the moment of inertia of the composite section.
Part D: Calculate the maximum stress in both steel and aluminum layers if a moment of Nm is applied.
Part E: Find the deflection of the beam over a span of m
Question : Dynamic Analysis of a Rotating Shaft
Part A: Calculate the critical speed of a rotating shaft of length m with a diameter of mm Assume the modulus of elasticity is GPa.
Part B: Determine the natural frequency of the shaft if it is simply supported at both ends.
Part C: Find the deflection at the center of the shaft due to a load of N applied at the midpoint.
Part D: Calculate the torsional stiffness of the shaft.
Part E: Determine the maximum shear stress in the shaft if it is subjected to a torque of Nm
Question : Combustion Analysis
Part A: Calculate the stoichiometric airfuel ratio for the complete combustion of octane CH
Part B: Determine the amount of air required for the complete combustion of kg of octane.
Part C: Find the lower heating value LHV of octane if the higher heating value HHV is MJkg and the latent heat of vaporization of water is MJkg
Part D: Calculate the flame temperature if the combustion takes place adiabatically and all the heat is used to raise the temperature of the products.
Part E: Determine the volume of exhaust gases produced at standard conditions.
Question : Stress and Strain in a Cylinder
Part A: Calculate the hoop stress in a thinwalled cylinder with an internal pressure of MPa, an internal radius of m and a wall thickness of mm
Part B: Determine the longitudinal stress in the cylinder.
Part C: Find the maximum shear stress in the cylinder.
Part D: Calculate the volumetric strain if the material's modulus of elasticity is GPa and Poisson's ratio is
Part E: Determine the change in diameter of the cylinder due to internal pressure.
Question : Heat Transfer in Fins
Part A: Calculate the heat transfer rate from a fin with a length of mm a diameter of mm and a thermal conductivity of WmK The base temperature is C and the ambient temperature is C Assume convective heat transfer coefficient is WmK
Part B: Determine the fin efficiency.
Part C: Find the fin effectiveness.
Part D: Calculate the temperature distribution along the fin length.
Part E: Determine the total heat loss from an array of such fins.
Question : Power Transmission by Belt
Part A: Calculate the power transmitted by a belt drive if the tension in the tight side is N the tension in the slack side is N and the belt speed is ms
Part B: Determine the belt tension ratio.
Part C: Find the coefficient of friction between the belt and the pulley if the angle of contact is
Part D: Calculate the torque on the driving pulley.
Part E: Determine the initial tension in the belt.
Question : Vibration Analysis of a MassSpring System
Part A: Calculate the natural frequency of a massspring system with a mass of kg and a spring constant of Nm
Part B: Determine the damping coefficient if the system has a damping ratio of
Part C: Find the damped natural frequency of the system.
Part D: Calculate the logarithmic decrement for the system.
Part E: Determine the amplitude of vibration if the system is subjected to a harmonic force of N at the resonance frequency.
Question : Internal Combustion Engine Performance
Part A: Calculate the indicated power of a cylinder engine with a bore of mm a stroke of mm an indicated mean effective pressure of MPa, and an engine speed of rpm
Part B: Determine the brake power if the mechanical efficiency is
Part C: Find the brake specific fuel consumption if the fuel consumption is kgmin and the calorific value of the fuel is MJkg
Part D: Calculate the thermal efficiency of the engine.
Part E: Determine the volumetric efficiency if the air intake volume is mmin and the engine displacement volume is liters per cycle.
Question : Bending of Beams
Part A: Calculate the bending moment at the midpoint of a simply supported beam with a span of m and a uniformly distributed load of kNm
Part B: Determine the maximum bending stress if the beam has a rectangular crosssection with a width of mm and a height of mm
Part C: Find the shear force at a section m from one end.
Part D: Calculate the deflection at the midpoint using the double integration method. Assume the modulus of elasticity is GPa.
Part E: Determine the slope at the ends of the beam.
Question : Thermodynamic Properties of Gases
Part A: Calculate the specific volume of air at K and MPa using the ideal gas law. Assume R JkgK
Part B: Determine the change in internal energy if the temperature of kg of air increases from K to K Assume Cv JkgK
Part C: Find the change in enthalpy for the same temperature change. Assume Cp JkgK
Part D: Calculate the entropy change if the pressure remains constant during the temperature change.
Part E: Determine the final pressure if the air undergoes an isentropic expansion to double its initial volume.
Question : Stress Analysis in a Beam
Part A: Calculate the maximum bending moment in a cantilever beam with a length of m and a point load of N at the free end.
Part B: Determine the bending stress at the fixed end if the beam has an Isection with a moment of inertia of x mm and a depth of mm
Part C: Find the shear stress at the fixed end if the beam has a width of mm
What is network security?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started