Q. What is the main source of error in a null detector?

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Q. When current passes through the resistances in the Wheatstone bridge what happens?

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Q. What is the effect of the increase in temperature on the resistance elements?

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Q. Heating effect in the Wheatstone bridge can be avoided by _________

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Q. The main error when measuring low resistances is _________

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Q. How is thermal emf generated?

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Q. Thermal emf can be prevented by _________

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Q. Wheatstone bridge is a __________

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Q. Wheatstone bridge is used to measure resistance in the range of ________

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Q. Wheatstone bridge is used to measure the d.c. resistance of various types of wires for _________

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Q. Telephone companies make use of the Wheatstone bridge for _________

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Q. The types of faults in a telephone line are ________

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Q. How can a Wheatstone bridge be used for the measurement of physical parameters?

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Q. By using the variations on a Wheatstone bridge we can _________

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Q. One of the simplest applications of a Wheatstone bridge is ________

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Q. Thermal compensation can be provided in a Wheatstone bridge by ________

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Q. Wheatstone bridge can’t be used for measurement of _________

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Q. Cost of maintenance of Wheatstone bridge is _________

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Q. What is the effect of galvanometer on measurement of high resistance?

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Q. What is the effect of heat on the resistances in a Wheatstone bridge?

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