Synchronous counters are _____ than the ripple counters.

Match the List-1 (type of 8-bit ADC) with List-2(Minimum conversion time in clock cycles)

List - 1

A. Successive approximation
B. Dual-slope
C. Parallel Comparator

List - 2

1) 1
2) 8
3) 16
4) 256
5) 512

A ring oscillator consisting of 5 inverters is running at a frequency of 1.0 MH$$_z$$. The progagation delay per gate is ______

A rectangular hollow metal waveguide of internal cross-section of $$7.366\,\,cm\,\, \times \,\,3.556\,cm$$ carries a 3 GHz signal in the $$T{E_{10}}$$-mode. Calculate the maximum power handling capability of the waveguide assuming the maximum permissible electric field inside the waveguide to be 30 kV/cm