Question 1: Why is the screen of a CRT coated with the phosphor?
Question 2: Why are the inner walls of a CRT between neck and screen coated with the conducting material?
Question 3: How is phase difference between the two voltages of similar frequency measured with a CRO?
Question 4: How is the frequency of a voltage signal measured with CRO?
Question 5: How is an ac voltage measured with the CRO?
Question 6: How is iron losses measured with the CRO?
Question 7: Describe the problems related with measurement of resistance, inductance and the capacitance at high frequencies.
Question 8: Explain the resonance process for measurement of inductance at high frequencies. Describe the suppositions made. How is the effect of additional capacitances in the tuning capacitor taken care of?
Question 9: Explain the method of measurement of capacitance at high frequencies by using the resonance method.
Question 10: Describe the following two techniques of measurement of effective resistance of a coil at high frequencies:
a) Resistance variation method
b) Reactance variation method