ECE :: Electronic Devices and Circuits
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The ratio of impurity atoms to intrinsic semiconductor atoms in an extrinsic semiconductor is about.
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To ensure that a zener diode does not get destroyed
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SCR turns of from conducting state to blocking state on
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The kinetic energy of free electrons in a metal is (where k is the de-Broglie wave number of the electron)
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The turn on time of an SCR is 5 micro second. Its trigger pulse should have
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The cut in voltage
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With an ac input from 50 Hz power line, the ripple frequency is
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For an insulating material, dielectric strength and dielectric loss should be respectively
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Semiconductors have
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The dipole moment per unit volume as a function of E in the case of an insulator is given by (symbols have the usual meaning).
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A.
50 Hz in the dc output of half wave as well as full wave rectifier
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B.
100 Hz in the dc output of half wave as well as full wave rectifier
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C.
50 Hz in the dc output of half wave and 100 Hz in the dc output of full wave
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D.
100 Hz in the dc output of half wave and 50 Hz in the dc output of full wave
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