Q. How can R₁ be scaled?

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Q. Scale of resistance can be calibrated.

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Q. Bridge can be used for the measurement of _________

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Q. The balance condition is _________

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Q. Commercial Maxwell bridges measures _________

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Q. At high Q values, the angular balance condition is _________

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Q. In general bridges consist of __________

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Q. Stray capacitance exists between the components.

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Q. The magnitude of stray capacitances is fixed.

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Q. Stray capacitance effects can be minimized by __________

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Q. Most popular method of avoiding the stray capacitance effects is __________

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Q. Wagner device is a ____________

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Q. Which is the guarding arm?

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Q. Bridge is suitable for _________

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Q. In Maxwell’s capacitance bridge for calculating unknown inductance, the various values at balance are, R₁ = 300 Ω, R₂ = 700 Ω, R₃ = 1500 Ω, C₄ = 0.8 μF. Calculate R₁, L₁ and Q factor, if the frequency is 1100 Hz.

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Q. In Wein’s bridge, the output frequency is determined by __________

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Q. What is the disadvantage of Maxwell Bridge?

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Q. Hay’s Bridge is used for measuring __________

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Q. Maxwell’s Inductance Capacitance Bridge is used for measuring ___________

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Q. The four arms of an AC bridge network are as follows:

Arm AB: unknown impedance
Arm BC: standard capacitor C₂ of 1000pf
Arm CD: a non-inductive resistance of R of 100 Ω in parallel to a capacitor of 0.01 μF
Arm DA: a non-inductive resistance of 1000 Ω

The supply frequency is 50 Hz and connected across terminals B and D. If the bridge is balanced with the above value, determine the value of unknown Impedance.

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