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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 5
21.
Which rectifier has the best ratio of rectification?
Half wave rectifier
Full wave rectifier
Bridge rectifier
Three phase full wave rectifier
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.

Assertion (A): A p-n junction is used as rectifier.

Reason (R): A p-n junction has low resistance in forward direction and high resistance in reverse direction.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
In an integrated circuit the SiO2 layers provide
electrical connection to external Ckt.
physical strength
isolation
conducting path.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
For a n-channel JFET with r0 = 10 kW, (VGs= 0 V, VP = - 6 V)the drain resistance rd at VGS= - 3 V is given by
40 kΩ
2.5 kΩ
4.44 kW
120 kW
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Which of the following are voltage controlled devices?
Vacum triode
FET
SCR
Both (a) and (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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