In a broadcast superheterodyne receiver, the
A). Local oscillator operates below the signal frequency
B). Mixer input must be tuned to the signal frequency
C). Local oscillator frequency is normally double the IF
D). RF amplifier normally works at 455 kHz above the carrier frequency
Mixer input must be tuned to the signal frequency
1. The most commonly used amplifier in sample & hold circuits is
2. The induced e.m.f. will be maximum when a conductor cuts the magnetic field at an angle of
3. A rotory converter can also be run as a
4. Heat is transferred simultaneously by condition, convection and radiation
6. Generators for peak load plants are usually designed for maximum efficiency at
8. The speed of a D.C. series motor is
9. A moving-coil permanent-magnet instrument can be used as _____ by using a low resistance shunt.
10. PVC stands for