In vibrating condenser amplifier type pH meter, to maintain good performance which of the following has to be done?
A. Frequency of the vibrator should be stable
B. Frequency of the vibrator should be constant
C. Amplitude of the vibrator should be constant
D. Both frequency and amplitude of the vibrator should be constant and stable
Answer:D
In vibrating condenser amplifier type pH meter, to maintain good performance which of the following has to be done?
A. Frequency of the vibrator should be stable B. Frequency of the vibrator should be constant C. Amplitude of the vibrator should be constant D. Both frequency and amplitude of the vibrator should be constant and stable
Explanation: In vibrating condenser amplifier type pH meter, to maintain good performance, both frequency and amplitude of the vibrator should be constant and stable.