Q. The main reason why Ni-Zn ferrites are used for audio and T.V. transformers is that

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Q. Assertion (A): When light falls at junction of p-n photodiode, its p side becomes positive and n side becomes negative.

Reason (R): When a photodiode is short circuited, the current in the external circuit flows from p side to n side.

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Q. In what condition does BJT act like an open switch

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Q. In a JFET

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Q. A power supply has full-load voltage of 20 V. What will be its no load voltage when its voltage regulation is 100%

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Q. For a photo conductor with equal electron and hole mobilities and perfect ohmic contacts at the ends, an increase in the intensities of optical illumination results in

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Q. Ferrities are particularly suited for high frequency applications because of their

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Q. In intrinsic semiconductor, the fermi level

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Q. Electromagnetic waves transport

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Q. In a forward biased p-n junction current enters p material as hole current and leaves n material as electron current of the same magnitude.

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Q. When P-N junction is in forward bias, by increasing the battery voltage

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Q. A semiconductor in its purest form called

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Q. Which of the following is an active device?

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Q. Assertion (A): The forward dynamic resistance of p-n diode varies inversely with current.

Reason (R): The forward dynamic resistance of p-n diode varies with the operating voltage.

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Q. If E (i.e., available energy state) = EF(i.e., Fermi level), then probability that state E will be occupied is 0.5 for any temperature T.

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Q. The output, V-I characteristics of an Enhancement type MOSFET has

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Q. Piezoelectric quartz crystal resonators find application where

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Q. The forbidden energy gap between the valence band and conduction band will be least in case of

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Q. If too large current passes through the diode

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Q. Assertion (A): Intrinsic semiconductor is an insulator at 0 K.

Reason (R): Fermi level in intrinsic semiconductor is in the centre of forbidden energy band.

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