Measurement and Instrumentation
When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is

 20.
 31.4.
 54.2.
 25.4.

ANSWER DOWNLOAD EXAMIANS APP

Measurement and Instrumentation
The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following?

 Period measurment modes only.
  Period and frequency measurement modes respectively.
 Frequency and period measurment modes, respectively.
 Frequency measurment modes only.

ANSWER DOWNLOAD EXAMIANS APP