Recent questions tagged cro

Description : sketch time period measurement by CRO.

Last Answer : Horizontal sweep is turned ON and the display appealing on the screen is adjusted by varying different control knobs provided on the front panel of CRO, till the signal is suitably displayed ... Where m=Number of division in one complete cycle n=Setting of time base =Time/Division

Description : application of CRO.

Last Answer : Applications of CRO: 1) Voltage measurement. 2) Current measurement. 3) Measurement of phase difference. 4) Measurement of phase. 5) Measurement of frequency. 6) Measurement of inductance. ... in various circuits. 17) For checking transistor. 18) It can measure short time interval.

Description : Compare analog CRO with digital storage oscilloscope (DSO).

Last Answer : Analog CRO DSO 1 High bandwidth Less bandwidth due to aliasing effect 2 High  writing speed about 15 GHz Limited speed 3 No memory Has memory ... Less storage time. The digital oscilloscope is  capable of an infinite storage time, using its digital memory.

Description : List any four measure knobs on front panel on CRO.

Last Answer : Knobs on front panel of CRO: 1. Power ON- OFF 2. Intensity control 3. Focus control 4. Astigmatism control 5. Volt/Div control 6. Vertical position control 7. Invert 8. Horizontal position control 9. Synchronization. 10. Channel selection.

Description : List any two applications of CRO.

Last Answer : Applications of CRO: 1) Measurement of phase and frequency. 2) Measurement of inductance and capacitance. 3) Tracing the waveform. 4) Determination of amplitude of variable quantity. 5) In ... in transmission lines 9) To check faulty components in various circuit 10) For tracing transistor curves

Description : Draw block diagram of CRO. Write function of each block.

Last Answer : 1. Vertical amplifier strengthens the input signal applied to vertical depleting plates 2. Trigger circuit gives input to time base circuit 3. The output of time base generator is amplified by ... of CRT internally coated with Phosphors material on which we observe waveform of the input signal.

Description : The time base signal in Cathode Ray Oscilloscope (CRO) is  (1) A square wave signal (2) A sawtooth signal (3) A triangular wave signal (4) A sinusoidal signal

Last Answer : 2 Saw tooth 

Description : The Lissajous pattern on the screen of a CRO is an ellipse with major axis in quadrant 2 and quadrant 4. Then the phase difference between two signals Can be :  (A) 270° (B) 210° (C) 180° (D) 300°

Last Answer : The Lissajous pattern on the screen of a CRO is an ellipse with major axis in quadrant 2 and quadrant 4. Then the phase difference between two signals Can be : 210°

Description : The vertical deflection of an electron beam on the screen of a CRO is measured to be 8 mm. Now, the potential difference between the Y-plates is doubled, and simultaneously the pre-accelerating anode voltage is reduced to half of ... on the screen would become (A) 64 mm (B) 32 mm (C) 8 mm (D) 1 mm

Last Answer : The vertical deflection of an electron beam on the screen of a CRO is measured to be 8 mm. Now, the potential difference between the Y-plates is doubled, and simultaneously the pre-accelerating ... of its previous value. Then, the vertical deflection of the beam on the screen would become 32 mm