Electronic Devices And Circuits - Study Mode

[#181] Power diodes are generally
Correct Answer

(A) Silicon diodes

Explanation

Solution: Power diodes are used in applications that require handling high currents and voltages . Germanium diodes have a lower breakdown voltage compared to silicon diodes. This means they are not suitable for high-power applications where high voltages are involved. Silicon diodes, on the other hand, have a much higher breakdown voltage and can handle significantly larger currents. Therefore, power diodes are generally made from silicon because of its ability to withstand higher power levels. Hence, the correct answer is Option A: Silicon diodes .

[#182] When avalanche breakdown occurs covalent bonds are not affected.
Correct Answer

(B) False

[#183] Which variety of copper has the best conductivity?
Correct Answer

(A) Pure annealed copper

[#184] Free electrons exist in
Correct Answer

(D) Conduction band

[#185] In a half wave rectifier, the load current flows
Correct Answer

(A) Only for the positive half cycle of the input signal