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The following is taking from the 'Outline Answers' of Part (A) of the 2009 Noise and Vibration Control Engineering paper from an examination as part of the Diploma in Acoustics and Noise Control which is accredited by the Institute of Acoustics.
"Inertia blocks are massive supports used for isolating foundations beneath vibration-sources and/or vibration-sensitive machines. Inertia blocks increase the isolated mass and therefore decrease the natural frequency of the vibrating system; particularly useful for dealing with very low frequency vibration problems, e.g. isolating a recording studio from an underground railway."
It is generally considered that the equipment should be rigidly mounted to the inertia block, a view also taken by Bies and Hansen (2009). The inertia block should also be made of rigid material such as concrete.
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To design a building which type of moment of inertia you use about xaxis about yaxis or polar moment of inertia?
We use y_y axes
Another term for resistance to change or a measure of mass is what?
"inertia"
What is inertia in a 3 Phase motor?
A motor when running has inertia in the rotating parts, which is a reserve of kinetic energy. The kinetic energy is found as the moment of inertia times the square of the angular velocity.
Mass moment of inertia of a flywheel?
define moment of inertia§ I is the moment of inertia of the mass about the center of rotation. The moment of inertia is the measure of resistance to torque applied on a spinning object (i.e. the higher the moment of inertia, the slower it will spin after being applied a given force).
What is the difference between a big block engine and a small block engine?
The difference is in the design of the head. Also due to the head design, the physical size of the motor is larger even if CID (displacement) is identical. The best visual example I can think of is Ford 351 windsor which was a small block: http://www.mustangsteve.comW351_65.jpg and a Ford 351 Cleveland which was a big block: http://thunder-performance.com/images/Tony\'s%20351%20Cleveland%20(1).JPG Generally you can tell the difference by looking at the valve covers. if they are long, narrow and rectangular, it's a small block. If they are fat squat and irregular shaped, you're looking at a big block. There are other differences too, for example bore and stroke. A small block generally has a shorter stroke and is thought to rev higher, whereas a big block has a longer stroke with more torque. There are other disputed difference between a small and a big block. And for the most part, you can simply tell by the displacement. Generally, anything larger than 366 CID is a big block.
To design a building which type of moment of inertia you use about xaxis about yaxis or polar moment of inertia?
We use y_y axes
What is the difference between randomized block design and completely randomized design?
principle of local control is present in randomised block design but missing in completely randomised design variations are present in completely randomised design but under randomised block design blocking reduces known but irrelevant sources of variations. One way annova is used to analyse the completely randomised design and two way annova is used to analyse the randomised block design.
Does a 2-kg iron brick have as much inertia as a 1-kg block of wood?
No
If you Compare a 1kg block of solid iron a 2kg block of solid iron has twice as much?
1. Volume 2. Mass 3. Inertia
What are the different types of block printing?
The different types of block printing include relief printing, where the design is carved into a block and then inked to transfer the design onto the substrate; intaglio printing, where the design is incised or etched into the block; and screen printing, where a stencil is used to transfer the design through a screen onto the substrate.
What is the strongest home design material. Concrete block or wood frame?
concrete block
At what cubic inch does a engine go from a small block to a big block?
BIG BLOCK OR SMALL BLOCK DOES NOT DEPEND ON CUBIC INCHES . IT IS THE DESIGN OF THE BLOCK ITS SELF.
What are the limitations of Randomized block design?
The limitations of randomized block design include its non-suitability with large numbers of treatments. It also includes interactions between block and treatment effects increase error.
What is the statistical model for factorial design under randomized complete block design?
reference for factorial completly randomised design
What has more inertia a balloon or a cinder block?
Inertia is the ability of the object to resist changes in the state of motion. It would be harder to push a cinder block and make it accelerate. Therefore, the cinder block has more inertia. The more mass, the more inertia.
Is the 2001 Chevrolet silverado 1500 5.3L V8 a 350 block or 327 block?
It is a 325 CID engine block. ( New design ) Bore and stroke is 3.779x3.622 inches.
How will you draw the block flow diagram of production of ammonia?
It depends on the process design.
