Oscilloscopes

X-plates is

• positioned vertically to deflect the electron beam in horizontal direction

• positioned horizontally to deflect the electron beam in vertical direction

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Figure shows two pulses on a CRO. The pulses are caused by two consecutive signals detected by a microphone connected to the CRO.

Calculate the time lapse between the signals if the timebase setting is 4 ms cm ^-1.

• 1.208 second

• 0.1208 second

• 0.00208 second

• 0.0208 second

Tags

NGSS.HS-PS4-1

Diagram shows a waveform displayed on the screen of a cathode ray oscilloscope (C.R.O.). Which of the following control switch needs to be switched on to display this waveform?

• intensity

• time-base

• Y-gain

• Y-shift

Tags

NGSS.HS-PS4-5

Diagram shows a trace on the screen of a C.R.O. when a signal is connected across the Y-input. What type of signal is applied across the Y-input and what is the condition of the time-base?

• alternating current, switched off

• direct current, switched off

• alternating current, switched on

• direct current, switched on

Tags

NGSS.HS-PS4-3

Diagram shows the trace displayed on the screen of a C.R.O. with the time-base set to 10 ms/div. What is the frequency, f of the wave?

• 5 Hz

• 25 Hz

• 40 Hz

• 50 Hz

Tags

NGSS.HS-PS4-1

Diagram shows a waveform displayed on the screen of a C.R.O. If the controls on the C.R.O. are set at 0.5 V/div and 2 ms/div, find the peak voltage and the frequency of the input signal.

• 4 V, 2 Hz

• 5 V, 10 Hz

• 2 V, 100 Hz

• 4 V, 100 Hz

Tags

NGSS.HS-PS4-1

Diagram shows part of C.R.O. What is Q?

• Control grid

• Focusing anode

• Accelerating anode

• Cathode

Tags

NGSS.HS-PS2-5

What you need to control in order to adjust the brightness of the signal in C.R.O.?

• Focusing anode

• Control grid

• Accelerating anode

• Cathode

What you need to control in order to adjust the resolution (sharpness) of the signal in C.R.O.?

• Control grid

• Focusing anode

• Accelerating anode

• Cathode

Which of the following C.R.O. setting will produce the following signal?

• 1.5 V dry cell connected, time-base on

• 1.5 V dry cell connected, time-base off

• 1.5 V a.c. supply connected, time-base on

• 1.5 V a.c. supply connected, time-base off

Tags

NGSS.HS-PS4-3