ELECTRONIC DEVICES MCQ Quiz: GKFix - Bridge of Knowledge

Question 1

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What physical quantity does the Q-value directly relate to in nuclear reactions?

Electric charge
Energy change due to mass defect
Magnetic moment
Spin angular momentum

Question 2

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What is the significance of the 100 Hz output in a full-wave rectifier circuit?

It means input is faulty
It indicates efficient use of the AC input cycle
It reduces voltage
It increases resistance

Question 3

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What does the energy value 360 keV likely represent in a nuclear decay scheme?

Energy of beta particle
Energy of alpha particle
Energy of a gamma photon emitted during de-excitation
Binding energy of electron

Question 4

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Why is a reaction with a positive Q-value sometimes labeled 'not possible'?

The Q-value is negative
Due to quantum mechanical or kinematic restrictions
It is too fast
It releases no energy

Question 5

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What is the role of the Q-value in determining nuclear reaction feasibility?

It measures temperature
It indicates whether the reaction is energetically favorable
It determines color of light
It sets the atomic radius