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If you're talking about NDI or NDT, radiography is a much longer process (developing film etc.) and a more tedious task than UT. You have to operate in a dark room, set up the x-ray tubehead.. etc. Also, radiography has a lot more risks than UT.

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16y ago

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Why bridge rectifier is prefered more over centre tap rectifier?

A: the only reason that can be is you get twice the voltage minus a diode drop. That does not means twice the power but actually a little bit less/


What does it mean when a stick built house has a continuous foundation?

It means the house, esp. meaning the roof is not premanufactured (indicating it is "hand stacked" - a prefered more laborious process), and it's built on a slab foundation as apposed to a raised foundation.


Why is nand gate prefer over nor gate?

The nand gate is prefered over the nor gate because for a nand gate, all other states are true except the 1 1 state which is false while for a nor gate all other states are false except the 0 0 state which is true.


Why only low frequencies are used in hartley oscillators?

an Hartley oscillator uses a tapped inductor ( i.e an inductor with an additional connection at a suitable position in turns of the coil. ) with a specific tap ratio as per the circuit gain and design. For Low Frequency oscillators large inductances are required which have large number of coil turns. It is possible to get suitable ratios for such values hence this circuit is prefered.


Why a coil of 1ohm resistance is prefered in auxiliary circuit?

A coil with 1 ohm resistance is preferred in auxiliary circuits because it provides a low impedance path, allowing for efficient current flow and minimizing power loss. This low resistance can help protect sensitive components from excessive current while maintaining adequate performance. Additionally, it enables faster response times in controlling devices, which is crucial for reliable operation in auxiliary applications.