From a homogeneous and isotropic dielectric material of dielectric constant ?r, a small volume element is taken out creating a cavity. The field can be kept homogeneous if Di. (i.e., electric flux density inside the cavity) and D0 (i.e., electric flux density outside the cavity) are such that
Options
A. D0 = Di
B.
C.
D. either (a) or (b)
Correct Answer
Explanation
Since the field is homogeneous .
More questions
1. Performance of a PIN diode switch is represented by
Options
A. insertion loss when switch is off
B. insertion loss when switch is on
C. insertion loss when switch is on and isolation loss when switch is off
D. insertion loss when switch is off and isolation loss when switch is on
Correct Answer: insertion loss when switch is on and isolation loss when switch is off
2. In a single phase full wave converter (M-2 connection) feeding on R - L load, the input voltage is v = Vm sin ?t. The expression for dc output voltage is