| Q1/ Multi Choices (25 Degrees) 1-one of the Advantages of Maintenance in power plant . A. Greater safety for workers. B. To increase efficiency C. To increase repair cost D. To increase power 2- Used to conduct hot gas (flame) from one Combustion chamber to the next A. Flow Sleeves B. Support Clamp C. Flame Detector D. Cross Fire Tubes 3- Used to provide seal between transition piece and first stage nozzle A. liner B. Floating Seals C. Flame Detector D. Cross Fire Tubes 4- Provide frequency signal ( flame intensity) to control system A. Cross Fire Tubes B. Support Clamp C. Flame Detector D. Flow Sleeves 5- During combustion inspection can see many problem A. Foreign Objects B. Abnormal C. Hot Spots D. All Above 6- Borescope inspection can check for A. Bleed valves B. all the internal parts C. Air Filter D. Lube Oil System 7- The boilers contain A. Superheater B. Reheater C. Economiser D. A |
In: Mechanical Engineering
C. Clearly indicate the plate number and indexing movements to be made to divide the periphery of a work piece into 29 divisions using compound Indexing? The following indexing plates are available. Plate No 1: 15,16,17,18,19,20.: Plate No 1: 21,23,27,29,31,33. Plate No 1: 37,39,41,43,45,49
In: Mechanical Engineering
A refrigeration system contains an adiabatic compressor with Refrigerant-134a as working fluid. Inlet conditions (state 1) are 140 kPa and -100C and the exit state is 1.6 MPa and 800C (state 2). The changes in KE and PE are negligible. Determine (a) actual exit specific enthalpy in kJ/kg, (b) exit specific isentropic entropy in kJ/lg.K and (c) efficiency of the compressor in %.
In: Mechanical Engineering
A car traveling at 45 m/s can brake to a stop within 10m. Assume that the braking force is effective for stop and constant with speed. If the car speeds up to 90 m/s, what is its stopping distance? Provide your explanation in words using principle of work and energy.
In: Mechanical Engineering
A thin-walled tube with a diameter of 6 mm and length of 20 m is
used to carry exhaust gas from a smoke stack to the laboratory in a
nearby building for analysis. The gas enters the tube at 200°C and
with a mass flow rate of 0.001 kg/s. Autumn winds at a temperature
of 15°C blow directly across the tube at a velocity of 7 m/s.
Assume the thermophysical properties of the exhaust gas are those
of air.
(a) Estimate the average heat transfer coefficient for the exhaust
gas flowing inside the tube.
(b) Estimate the heat transfer coefficient for the airflowing
across the outside of the tube.
(c) Estimate the overall heat transfer coefficient U and the
temperature of the exhaust gas when it reaches the
laboratory.(Note: 90°C is a reasonable guess for the tube
temperature.)
What is the value for the Nusselt number on the inside of the tube? N ui =
What is the average inside heat transfer coefficient, in W/m2·K? h i =
What is the value of the Nusselt number on the outside of the tube? N u o =
What is the average outside heat transfer coefficient, in W/m2·K? h o =
What is the overall heat transfer coefficient, U , in W/m2·K? U =
What is the temperature of the gas at the outlet of the tube, in °C? T m, o =
In: Mechanical Engineering
Can you write essay with 300-450 words related to these keywords?
1-Drag force 2- Lift force 3- Omnidirectional 4- Pitch control 5- Stall control 6- Yaw motor
In: Mechanical Engineering
Soil collected from the site is found to have
a. the degree of saturation
b. the void ratio e of the soil before the rainfall
c. The water content w\% after
In: Mechanical Engineering
An organic soil, the void ratio e is found to be 10.0 and GS is .2.35 If this soil is fully saturated, find:
a. Unit weight of the soil
b. water conten w%
c. Does this soil sink in water?
In: Mechanical Engineering
electronic psychrometric plotting program, let’s consider atmospheric conditions at sea level with a dry bulb temperature (Tdry bulb ) of 23˚C and a relative humidity (RH) of 30%. Plot this state point on the pyschrometric chart available in PsycPro software. Use PsycPro to determine the following: a. Wet bulb temperature (WBT) of the air b. Dew point temperature (DPT) of the air c. Humidity ratio (specific humidity) d. Enthalpy e. Specific volume of the air (i) Provide the values for the about parameters as found from the pshchrometric chart (ii) Provide a screenshots of your completed PsycPro chart with the following: a) values of above different parameters and b) with the above plotted state point (two screenshots) Instructions for using PsycPro can be found on the course Moodle. You can verify your answers using another online psychrometric program or a paper chart, if you wish.
In: Mechanical Engineering
What is meant by the mechanical and thermal efficiency of a car?
Demonstrate if both of these would be
100% in an ideal scenario?
In: Mechanical Engineering
In: Mechanical Engineering
write a Fortran 77 language code for vapour absorption air source water heat pump producing 70k temperature
In: Mechanical Engineering
Cold water inside / outside diameter in the same axis two pipe
heat exchanger used as engine oil cooler
It enters the 25/30 mm steel pipe at a temperature of 15 degrees at
a speed of 0.5 m / s, Take off at a temperature of 25 degrees.Hot
oil, on the inside / outside diameter of 40/46 mm steel pipe, at a
temperature of 60 degrees with a speed of 0.25 m / s.
enters.it is desired to cool the oil 5 degrees, according to this
:
A)Find pipe length for parallel flow?
B)Find the pipe length for reverse flow. Examine the results
C) Calculate the pressure loss of the oil and the required pump
power in reverse flow.
In: Mechanical Engineering
which sensor can find and fix the problem when the engine runs erratically and how do I know if it is good or not? Also, the components in the engine how do I change it?
In: Mechanical Engineering
Consider a system in any suitable reference plan for which the Generalized forces Qj transformed to Fr, rFθ and what will be the total Kinetic energy for that system.
In: Mechanical Engineering