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PUNJAB BOARD PREVIOUS YEAR PAPERS-ALTERNATING CURRENTS-EXERSICE
- Define resonant frequency of LCR series circuit.
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- Which is more dangerous in use :a.c or d.c. ? Explain, why
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- Define root mean square value of an alternating current.
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- The frequency of an ac supply is doubled, what happens to inductive re...
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- How does capacitive reactance Xc of a capacitor vary in an a.c. and d....
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- How does inductive reactance.XL of an inductor vary in d.c.and high fr...
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- Define root mean square value of an alternating current.
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- Derive an our expressionforthe Power of an L.C.R.alternating current c...
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- Derive the relation for mean or average value of alternating current.
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- An alternating e.m.f is supplied through apure inductance. Investigate...
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- Derive an expression for average power in an LCR a.c. circuit.
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- Prove mathematically that the average value of alternating current ove...
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- Derive the expression for the impedance of an a.c. circuit with an ind...
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- Define root mean square value of an alternating current.
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- What do you mean by the average value of a.c. ? Derive the expression ...
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- Define root mean square value of an alternating current.
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- With the help of phasor diagram derive an expression for impedance in ...
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- Using phasor diagram, derive an expression for impedance of an a.c. ci...
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- Define root mean square value of an alternating current.
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- Derive a relation for the average power of an alternating current circ...
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