If ?r is relative permeability, ?r is relative permittivity, c is velocity of li

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If ?_r is relative permeability, ?_r is relative permittivity, c is velocity of light f_c is cutoff frequency, phase velocity v_p (i.e., speed with which a particular phase of the wave travels down a rectangular waveguide at frequency f) is given by
Options
A.
B.
C.
D.

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2. Most of the memory chips in static RAM
Options
A. do not require any supply
B. need 2 V supply
C. need 5 V supply
D. need 12 V supply

6. In a single phase full wave regulator, the firing angles in the positive and negative half cycles are generally
Options
A. equal
B. different
C. equal or different
D. different but sometimes equal

7. The real part of complex dielectric constant and tan? for a dielectric are 2.1 and 5 x 10^-4 at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is
Options
A. 1.05 x 10^-3
B. 2.1 x 10^-3
C. 5 x 10^-3
D. 1.05 x 10^-2

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