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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 is an example of how women combated their second class citizenship?
In the United Kingdom, the Women's Movement took to the streets to protest to have the right to vote. They also fasted (refused to eat) and some extremists even when to the length of doing arson on small buildings as part of the British Suffrage Movement.
World War 1 helped many women broaden their opportunies due to war factory work and the death of thousands of youth British males on Flanders Fields.
Where can you get spare parts for a 12 gauge Miroku 3800 0U serial no 63048 NY?
Gun shop, gun show, on line auction, egunparts
I think you mean root pass. An example would be when butt welding two pieces of plate together (end to end). You would grind a bevel (angle) along the edge of each plate so when you put them end to end there is a small gap between them except at one small point at the bottom. This gap will be filled with molten weld metal to fuse the two plates. Typically, this gap cannot be filled up by one pass with the weld electrode. The welder will go back and forth along the plate eventually filling the entire gap. The "root pass" is simply the first pass the welder makes.
Difference between pressure regulating valve and differential pressure valve?
Pressure Differential Valve- maintains a constant Differential pressure across it. Say if P1 was inlet pressure and P2 was outlet pressure PDV will try to keep constant DP. Say if P2 increases due to some reason and P1 is constant the DP will decrease and will decrease flow through the PDV. At this point to maintain the constant DP PDV will open and allow more flow through to keep the flow constant and thus DP constant.
When your girlfriend asks you if she looks fat in that. There is no known solution to the Bulge Test, several leading physicists and philosophers spent their entire lives in search of the solution, but to no avail. It is rumoured that the great thinker Pythagoras in fact went mad from his inability to solve the Bulge Test, and it was this that drove him to believe in the sanctity of beans, which, it is well recorded, led to his demise.
How do you differentiate between positive displacement pump and roto dynamic pump?
Gear pump is a positive displacement pump.
(A positive displacement pump causes a fluid to move by trapping a fixed amount of it then forcing (displacing) that trapped volume into the discharge pipe.
or
A positive displacement pump has an expanding cavity on the suction side and a decreasing cavity on the discharge side. Liquid flows into the pump as the cavity on the suction side expands and the liquid flows out of the discharge as the cavity collapses. The volume is constant given each cycle of operation.
A positive displacement pump can be further classified according to the mechanism used to move the fluid:
a.Rotary-type, internal gear, screw, shuttle block, flexible vane or sliding vane, circumferential piston, helical twisted roots (e.g. the Wendelkolben pump) or liquid ring vacuum pumps.
b.Reciprocating-type, for example, piston or diaphragm pumps.
Gear pump is generally used for viscous fluid especially in hydraulic service.
Gear pump are used for high head , low flow application.
Widely used on car engine oil pumps. it is also used in various hydraulic power packs..
If you change the direction of gear pump ,suction will become discharge and discharge port become suction port.
Gear pumps requires high degree of close clearances between gears and its housings.
In centrifugal pump you will find above all in reverse .
A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure and flow rate of a fluid. Centrifugal pumps are the most common type of pump used to move liquids through a piping system. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward or axially into a diffuser or volute chamber, from where it exits into the downstream piping system. Centrifugal pumps are typically used for large discharge through smaller heads.
Centrifugal pumps are most often associated with the radial flow type. However, the term "centrifugal pump" can be used to describe all impeller type rotodynamic pumps including the radial, axial and mixed flow variations.
Gear pump is high efficiency pump while centrifugal pump will have relatively low efficiency.
Is iron and steel a conductor of cold?
Since cold is the absence of heat, this begs the question whether anything "conducts cold". Steel racks in a freezer feel cold since they absorb heat from your hand; the "cold" isn't moving into your hand, you're losing heat.
Discontinuous Reinforced Aluminum Composite
DRA is an aluminum alloy reinforced with chopped fibers such as silicon carbide anywhere between 5% to 70% fiber by volume.
Another more common name for this type of material is metal matrix composite, or MMC.
What is the average salary of a mechanical engineer?
starting out with about 50 thousand to 60 thousand a year and you can go to the military and learn that trade
What is torsional critical speed?
The term torsional critical speed of centrifugal pumps and associated drive equipment refers to the speed of a pump rotor or related rotating system that corresponds to a resonant frequency of torsional vibration of the rotating system. Torsional critical speeds are associated with torsional or angular deflection of the rotor and are not to be confused with lateral critical speeds associated with lateral deflection. The two are separate entities. A given rotor or rotating system may possess more than one torsional resonant frequency or torsional critical speed. The lowest frequency which produces the "first mode shape" and "first torsional critical speed" is in general of the most concern. Torsional vibration is caused by torsional excitation from sources such as variable frequency drive motor toque pulsations, combustion engine torque spikes and impeller vane pass pulsation. The calculation of the first torsional critical speed is fairly simple for simple rotor systems.
Top 100 engineering colleges in ptu for btech for mechanical engineering?
1. Swami Parmanand College of Engineering & Technology, LALRU, MOHALI (PUNJAB) Mobile:- 09815899696
2. Swami Parmanand Engineering College, LALRU, MOHALI (PUNJAB) Mobile:- 09815899696
What be course you can study after finishing diploma in electronic and communi?
You can study several courses after finishing diploma in electronics and communication engineering you can go for-
B.Tech from E&C
B.E
AMIE
and you can also go for other professional courses. like industrial automation
and training.
How do you control linear actuator by PID controller?
To control linear actuator by PID controller, use the data from the feedback device. Use the potentiometer to adjust the output until it reaches the target value.
What is the calculation for combustion chamber pressure at the beginning of the exhaust stroke?
Since the exhaust valve opens before the exhaust stroke begins, there should be very little pressure by then. But a clogged catalytic converter or muffler would increase the pressure. Also a turbo charger would increase the pressure.
To exactly calculate it would require comprehensive aerodynamic modeling of the complete exhaust system and engine passage way shapes, sizes, timing and RPM.
Not only would one need to know the drag and size of each part of the exhaust path, the resonant characteristics would need to be modeled as well.
This is a dreadful poor answer. Please replace with a better one. -Jesse
What is the purpose of a rod seal in a hydraulic cylinder?
To keep the hydraulic fluid in (double acting cylinders) and to keep dirt/washwater/etc out.
How many pumps in a proper handshake?
==Shaking hands== According to Dummies.com, you should "shake just a couple of times." I don't believe there is any "correct" answer to the question. Personally, I think you should hold it long enough to make eye contact, extend a verbal greeting, and allow the other person to do the same.
What is the difference between a pack slip and a pick slip?
a pack slip denotes what should be "packed" for a delivery. It may consolidate several orders to a route, truck or customer. However, in some businesses the pack slip or packing slip shows what has been "picked" for delivery or shipment a pick sheet denotes what items to pull from inventory. it too may be derived from consolidated orders. for example:Customers A, B and C all have orders shipping today. Each customer is within 10min of each other and all will be delivered from the same truck/route. A single pack slip is generated, detailing the 3 customers orders (qty and items) for the truck. depending on the type of picking utilized, one or several pick sheets may be generated. in this case, we'll say there are three "picking zones" in the warehouse. so three pick slips are generated, one for each zone. the pick slip tells each zone picker what items to pick. the three zones then deliver their picked items to a staging zone where the items are sorted into 3 boxes, one for each customer. these boxes get loaded onto the truck and each one is checked against the pack slip to ensure that each customer is receiving their order accurately. in short: a pick slip facilitates the method/order/consolidation of picking items from inventory. a pack slip facilitates the method in which orders are consolidated/organized and shipped to a customer. "pick" - pick it from inventory "pack" - pack up the truck
Tools and equipment used in arc welding?
Arc Welding:
1. Welding Helmet with flip front. (Shade #10 or #11)
2. Heavy leather welding gloves. (Consumable, 2 pairs per quarter)
3. Leather welding jacket
4. Leather apron or chaps
5. Leather work steel toed boots. (8" or higher)
6. Slag Hammer
7. Vise grips
8. Wire Brush
9. Welders cap
10. 4 ½" or 5" electric grinder, with 4" wire wheel.
11. Set of fillet weld gages.
12. Welder's respirator.
13. 12" tape measure
14. Flashlight
Desribe the relationship between flow tube length and fluid flow rate?
The flow rate of fluid in a flow tube is directly related to the length of the tube. Longer flow tubes typically experience higher pressure drops and slower flow rates, while shorter tubes generally result in faster flow rates due to lower pressure drops. Additionally, longer tubes can lead to increased frictional losses and turbulence, affecting the overall flow behavior.
