Essay Questions:
Question 1: What is the principle of CRT (Cathode Ray Tube)?
Question 2: Describe about deflection and sensitivity and state about electrostatic and magnetic deflection?
Question 3: What are the applications of C.R.O?
Question 4: Describe about ammeter and voltmeter and also illustrate about the frequency measurement?
Objective questions:
Question 5: The electro static deflection sensivity of a CRO:
a) Deflection in meters on the screen per volt of deflecting voltage.
b) Deflection voltage per deflection in meters.
c) Product of deflection in meters and deflection in voltage.
d) None of the above.
Question 6: The electro static deflection sensivity is directly propotional to:
a) Final anode voltage.
b) space in between the deflection plate.
c) Length of the deflection plate.
d) both a and b.
Question 7: The electro static deflection sensivity is inversly propotional to:
a) Length of the deflection plate.
b) Distance between screen and the center of deflection plate.
c) Final anode voltage.
d) Both a and b.
Question 8: The magnetic deflection sensivity is inversely proportional to:
a) Anode voltage.
b) square root of the anode voltage.
c) cube of the anode voltage.
d) Square of the anode voltage.
Question 9: The coating material employed for green screen in CRT is:
a) Zinc ortho silicate.
b) Calcium tungstate.
c) Zinc sulphide.
d) Zinc cadmium sulphate.
Question 10: The coating material employed for blue screen in CRT is:
a) Zinc ortho silicate.
b) Calcium tungstate.
c) Zinc sulphide.
d) Zinc cadmium sulphate.