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BINA LIBRARY-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-EXERCISE
- State the working principle of a transformer. What is hysteresis loss ...
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- A cylindrical bar magnet is kept along the axis of a circular coil. Wi...
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- Why do birds fly off high tension when current is switched on?
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- What is an amplitude ?
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- Why are coils in resistance box double wounded?
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- Why is spark produced in the switch off a fan when it is put off?
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- A copper disc is allowed to swing through the two poles of a U-shaped ...
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- A light bulb is rated at 100W for a 220V supply. Find the peak voltage...
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- A light bulb is rated at 100W for a 220V ac supply. Calculate the resi...
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- A sinusoidal voltage V=200 sin 314t is applied to a resistor of 10 Ome...
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- A lamp is connected in series with a capacitor. Predict your observati...
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- Explain the principle on which the metal detector is used in airport f...
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- Which surface have more friction – rough or smooth ? Why ?
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- Give two examples where rolling friction is utilized
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- Name the two factors on which the magnitude of frictional force depend...
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- An inductor of reactance 10Ω and resistance 10Ω are connected in serie...
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- A capacitor and resistor are connected in series with an ac source. If...
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- Give two methods by which friction is reduced in the wheels of the car...
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- A source of alternating emf of 220 V and 50 Hz is connected in series ...
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- A rectangular coil having 60 turns and area of 0.4m^2 is held at rig...
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