Explain the difference between Dynamometer type wattmeter and induction type wattmeter.
Dynamometer type wattmeter |
Induction type wattmeter |
i. Working torque comparatively weaker. | i. Working torque comparatively stronger. |
ii. Power consumption is low. | ii. Power consumption higher. |
iii. Scale in uniform. | iii. Scale in uniform and long. |
iv. Can be used both AC and DC system. | iv. Can be used only AC system. |
What are absolute & secondary instruments ? Why is damping required in a measuring instrument ?
Explain the difference between Dynamometer type wattmeter and induction type wattmeter.
Explain briefly the VSB-SC modulation
Explain the tunneling action in a tunnel diode.
Write a short note on TDM (Time Division Multiplexing).
Distinguish between group velocity and phase velocity.
Draw and explain the square – law modulator.