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Derive an expression for the resonant frequency of a parallel circuit, one branch consisting of a coil of inductance L and resistance R and the other branch of capacitance C.

The series RL circuit with parallel C is given in Fig. 19. The designed circuit consists of resistance R, inductance L are in series with parallel configuration of capacitance C. Let us consider the current I flowing through the RLC circuit by the a.c. voltage source with constant value of V.

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added 2 years ago
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Explain

  • Star – delta conversion
  • Delta – star conversion with the help of a purely resistive circuit

In this transformation any resistance in delta network can be found out if the resistances of corresponding star network are known. Here the branch resistances in the star connections are

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added 2 years ago
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Find the current in each branch of the network using Kirchhoff’s law

Fig.23

Applying KVL in mesh I, II and II respectively 2I13I2+7I3=12 … (1)

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added 2 years ago
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Define the terms accuracy, Precision, Resolution, Drift and Relative limiting error.

Accuracy of measurements mean conformity to truth. It is the closeness with which an instrument reading approaches the truth value of the quantity being measured

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added 2 years ago
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Explain the difference between Dynamometer type wattmeter and induction type wattmeter.

i. Working torque comparatively weaker. i. Working torque comparatively stronger.

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added 2 years ago
1197 views

Define gauge factor of a strain gauge & obtain its expression.

It is defined as the ratio of per unit change in resistance to per unit change in length. Expression: Gauge factor (Gf)=ΔR/RΔL/L

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added 2 years ago