1.
X and Y plates of a CRO are connected to unequal voltages of equal frequency withphase shift of 900. The Lissajous figure on the screen will be
A
Figure of eight
B
Circle
C
Straight line
D
Ellipse
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X and Y plates of a CRO are connected to unequal voltages of equal frequency withphase shift of 900. The Lissajous figure on the screen will be
Figure of eight
Circle
Straight line
Ellipse
The units for the deflection sensitivity of a CRO are
m/m-volt
Meter/volt
mm/volt
mm/m-volt
The time base signal in a CRO is a
Square wave form
Rectangular waveform
High frequency sinusoidal wave form
High frequency sawtooth wave form
The most accurate device for measuring voltage is ...............
VTVM
voltmeter
multimeter
CRO
The material used to coat inside face of CRT is ...............
phosphorus
carbon
sulphur
silicon
The horizontal plates of a CRO are supplied with ............... to observe the waveform of a signal
none of the above
sinusoidal wave
cosine wave
sawtooth wave
The colour of the spot on the screen of a CRO is a characteristic of
The velocity of the electrons striking the screen
Electron gun in a CRT
The type of the waveform being observed
The coating material on the screen
If the negative potential on the control grid of CRT is increased, the intensity of spot...............
none of the above
is increased
is decreased
remains the same
For display of signal pattern ............... voltage is applied to the horizontal plates of a CRO
none of the above
sinusoidal
rectangular
sawtooth
A dual-trace CRO has
Two vertical and two horizontal amplifiers
One-vertical and one horizontal amplifier
Two vertical and one horizontal amplifier
One vertical and two horizontal amplifier
A CRO is used to measure ...............
all of above
voltage
frequency
phase
A CRO can display
Time-invariant signals
AC signals
DC signals
Both AC and DC signals