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Mechanical Engineering

Mechanical Engineering is a branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and tools. Mechanical engineering involves application of the principles of dynamics, control, thermodynamics and heat transfer, fluid mechanics, strength of materials, materials science, electronics, and mathematics.

10,989 Questions

What are the capacity of Steam Turbines?

The capacity of each steam turbines has more than 530 GW in over 6000 installed units. The steam turbines provide high reliability and sustained high efficiency.

How cranes lift heavy loads without toppling?

Because anticlockwise torque is equal to clockwise torque and therefore the net torque is zero so the crane is in state of equillibrium and also there center of gravity pass through base therefore the cranes lift heavy load without toppling

What is fracture toughness of ceramics?

It depends on the ceramic. Most ceramics have fracture toughness between 0.7 AND 1 MPa - m^1/2. Some are lower, and some higher, up to 5 MPa-m^1/2

What is range in cooling tower?

Range is the difference of cooling water inlet and cooling water outlet temp

What is purpose of nozzle in steam turbine?

It sends hot gases from the combustion chamber to the 1st stage turbine blades at the correct angle and speed

What is the importance of computing in mechanical engineering?

Computer Engineering is the science of programming. Mechanical Engineering is a wide field that covers subjects from material properties (used in everything from developing chips to earth-moving machines). A typical Mechanical Engineer will have a variety of skills that envolve "dynamics", "statics", and a lot of other fun stuff. However, to know how to program things that involve Mechanical Engineering, you would need to know a fair amount of the subject. Knowing how to program something without knowing how it works would need...at best an interprerter. I have an electronic, electrical, and chemical background; however I know how to program a lot of things and have a few computer languages under my belt. My experience is that to know the real world around you and knowing some languages is a lot more helpful than just programming. Of course, I am a little biased, but if you see my logic, you can see that knowing Engineering helps you to understand the world around you and you become a much more effective programmer or Systems manager. Life is difficult, Love difficult.

Why tdbfp installed on turbine floor in thermal power plant?

TDBFP return drain is going to condenser hense TDBFP position should be above condenser elevation. If it's below turbone then return drain flow may be restricted.

Sachin

What is a person who agreed to work for someone a certain amount of time in exchange for the cost of ocean voyage?

An indentured servant is a person who agreed to work for someone a certain amount of time in exchange for the cost of ocean voyage.

Applications of center of pressure?

As the intensity of pressure increases with depth so for an inclined surface CP is bellow CG.

Center of gravity : a point from which the weight of a body or system may be considered to act. In uniform gravity it is the same as the center of mass.

How do you publish mechanical engineering journals?

You have to be a registered engineer to publish mechanical engineering journals.

Why threads are provided in simple screw jack Give reasons?

Threads are provided in a simple screw jack to allow the movement to be calculated to a certain distance or height and to allow for less effort in lift.

Does this cement satisfy astm standard for initial setting time?

does this cement satisfy ASTM standard requirements for normal consistency

What is a swash plate pump?

A swash plate is a way of going from rotary motion to linear motion without using a crankshaft.

A swash plate pump is a piston pump that uses a swash plate instead of a crankshaft.

What unit is tensile strength measured in?

tensile strength is usually given as a stress term - force per unit area. In the English system this is pounds per square inch (psi). In metric SI system,it is given in Meganewtons per meter squared (megapascals, MPa)

How much suction ability of donkey pump of 1 hp?

Well in Standard Donkey Pump units the answer would be Sqrt(13).

However, in east-ethiopian Donkey Pumps, the answer would in fact be, Margret Thatcher.

What is low pressure and high pressure in water chiller unit?

In regards to a water chiller unit, the terms low pressure and high pressure refer to the compressor, which takes low pressure and compresses it into high pressure gas, which is then turned into a liquid to cool the unit.

What is negative suction in pump?

Negative Suction Head means the pump is drawing liquid up from below its centerline. The distance between the centerline of the pump and the surface of the fluid is measured in head feet, this can be negative (below the pump) or positive (above the pump).

What is low cycle fatigue?

According to the low cycle fatigue, the nominal maximum stress values are less than the ultimate tensile stress limit.

Low cycle fatigue is failure under a stress reversal after less than 1000 cycles and generally occurs in metals where strains are very high, where stresses are in the plastic region

High cycle fatigue is failure under a stress reversal after more than 1000 cycles and generally occurs in metals where strains are low, caused by defects, and growth, where stresses are in the elastic region

What is the shear strength of a 1 inch diameter steel shaft?

44,000 psi

Steel has a shear strength (in single shear) of 44,000 psi; in double shear of 88,000 psi. The area in shear is the diameter of the shaft times the length of the shaft under stress.

If it passes through two 1/4" plates with forces acting in opposite directions the shaft will fail with the application of 22,000 pounds of force. If it passes through three sheets of 1/4" plate (with the force on the center plate opposite the other two) the plate will fail with the application of 23,750 pounds of force (compression {crush} failure).

The fatigue strength of mild steel is?

The fatigue strength of mild steel refers to the certain conditions whereby the mild steel suffers fatigue failure.