1. While soldering what action is applied on solder?
(A)Capillary action(B)Gravitational force
(C )Electromagnetic force(D)Magnetic action

2.Which one of these a pressure welding method?
(A)ARC welding(B)Gas welding
(C )Resistance welding(D)Thermit(fusion) 

3.Which of the following is not an insulator?
(A)Gold(B)Glass
(C )Mica(D)Wood

4.Which type of fire extinguisher is used in a welding shop?
(A)Form type extinguisher(B) CO2 extinguisher
(C ) Dry powder extinguisher(D) Halon extinguisher

5.The term used ....etc

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Implementation Of Zoom FFT in Ultrasonic Blood Flow Analysis

Introduction
An adequate blood flow supply is necessary for all organs of the body. Analysis of the blood flow finds its importance in the diagnoses of diseases. There are many techniques for analyzing the blood flow. These techniques are not affordable by the poor people because of their high expense. So we have implemented a technique called Zoom-FFT. This technique is simple and affordable to detect the blood clots and other diseases.

Human with his potential tries to get wh ....etc

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An adequate blood flow supply is necessary for all organs of the body. Analysis of the blood flow finds its importance in the diagnoses of diseases. There are many techniques for analyzing the blood flow. These techniques are not affordable by the poor people because of their high expense. So we have implemented a technique called Zoom-FFT. This technique is simple and affordable to detect the blood clots and other diseases.

Human with his potential tries to get whichever is unexplored, explored, and till now we are managing and succeeding u ....etc

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1. Carbon content of grey cast iron is :
(A) Less than 0.5%(B)0.5-1%
(C ) 1.0—1.5%(D)2-3.5%

2.Brass is:
(A) Cu-Zn alloy(B)Cu-Tin alloy
(C ) Cu-Pb alloy(D)Cu- Ni alloy

3.Large size bolt heads are made by : 
(A) Hammering(B)Casting,
(C ) Swaging(D)Upset forging

4.A micron is :
(A) 1mm(B)0.1mm
(C ) 0.01mm(D)0.001mm

5.The melting point of gold is : 
(A) 100°C(B)569°C
(C ) 1063°C(D)1493°C

6.For soldering of Brass and Copper, the flux used is :
(A)Zinc Chloride (C ) Cupric acid
(B) HCI acid
(D) A ....etc

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An adequate blood flow supply is necessary for all organs of the body. Analysis of the blood flow finds its importance in the diagnoses of diseases. There are many techniques for analyzing the blood flow. These techniques are not affordable by the poor people because of their high expense. So we have implemented a technique called Zoom-FFT. This technique is simple and affordable to detect the blood clots and other diseases.

Human with his potential tries to get whichever is unexplored, explored, and till now we are managing and succeeding ....etc

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Ultrasonic methods enjoy the great capabilities in solving various problems associated with structural engineering and engineering materials. In this seminars, a host of research works and studies in this field carried out by the speaker will be presented to demonstrate the broad spectrum of their applications in aerospace engineering. Focus will be on nondestructive evaluation (NDE) and characterization of aerospace materials such as composites. Topics to be presented in the seminar include (1) 3-D imaging of damage in composites, (2) echo det ....etc

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help me for ULTRASONIC MOTION DETECTOR. ....etc

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Ultrasonic Motor

All of us know that motor is a machine which produces or imparts motion, or in detail it is an arrangement of coils and magnets that converts electric energy into mechanical energy and ultrasonic motors are the next generation motors.

In 1980,the world's first ultrasonic motor was invented which utilizes the piezoelectric effect in the ultrasonic frequency range to provide its motive force resulting in a motor with unusually good low speed, high torque and power to weight characteristics.

Electromagnetism has always be ....etc

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Nonintrusive manipulation by standing-wave acoustics has been widely used for levitation and trapping of macroscopic objects.1 The standing-wave field creates an acoustic radiation force on the object that depends on its size and acoustic parameters.2 In the present article we demonstrate size-selective separation and retention of latex spheres inside a small-diameter flow-through capillary by use of an ultrasonic radiation trap. The work aims at rapid in-flow detection and separation of specific molecules via antibody-coated latex spheres. Ac ....etc

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ABSTRACT.
The ultrasonic testing of concrete structures has posed many problems. Conventional methods such as pulse echo and pitch catch are of limited use due to its composition, aggregates will cause scattering and multiple reflections. Alternative ultrasonic methods have been recently investigated that examine the shape of the waveform as it traverses through a complex material, the idea being not to located a single defect but to determine the overall mechanical properties within a certain region. In damaged materials, particularly ones ....etc

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