The ___________ of a CRO controls the brightness of the spot formed on the screen a) Filament b) Grid c) Deflection plates d) Cathode

The ___________ of a CRO controls the brightness of the spot formed on the screen
a) Filament b) Grid c) Deflection plates d) Cathode
by

1 Answer

Answer :

b) Grid
by

Related questions

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Last Answer : c) high positive

Where is the brightness control located in a TV? A. The audio section B. The video section C. The grid-cathode circuit D. The front panel

Description : Where is the brightness control located in a TV? A. The audio section B. The video section C. The grid-cathode circuit D. The front panel

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In an oscilloscope, ___ adjusts the brightness of the spot by chaning the current on the control grid.

Description : In an oscilloscope, ___ adjusts the brightness of the spot by chaning the current on the control grid.

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A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode

Description : A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode

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An important part of inkjet printer is: (a) Deflection plates (b) Toner (c) Drum (d) None of these

Description : An important part of inkjet printer is: (a) Deflection plates (b) Toner (c) Drum (d) None of these

Last Answer : (a) Deflection plates

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Description : Horizontal deflection plates of CRO are placed generally   (a) Horizontal (b) Vertical (c) Diagonal (d) (a) or (b)  

Last Answer : Horizontal

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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

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There are three bulbs of 60W 100W and 200W which bulb has thickest filament. a. 100W b. 200W c. 60W d. All

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Last Answer : b. 200W

A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent period is 1.5 ms. The intracellular electrode is 6 cm form the anode of the simulator and 4.5 cm from the cathode of the simulator. What is the conduction velocity of the axon. a. 15 m/s b. 30 m/s c. 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

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The time base signal in Cathode Ray Oscilloscope (CRO) is

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If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of

Description : If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of deflection plates is 2 cm, the distance between the plates is 1 cm and accelerating voltage is 500 V, deflection sensitivity is   (a) 33.2 V/cm (b) 0.03 cm/V (c) 66.4 V/cm (d) 0.015 cm/V

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A student focuses the image of a candle flame, placed at about 2 m from a convex lens of focal length 10 cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its image on the screen. (a) In which direction does he move the lens to focus the flame on the screen? (b) What happens to the size of the image of the flame formed on the screen? (c) What difference is seen in the intensity (brightness) of the image of the flame on the screen? (d) What is seen on the screen when the flame is very close (at about 5 cm) to the lens?

Description : A student focuses the image of a candle flame, placed at about 2 m from a convex lens of focal length 10 cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its ... d) What is seen on the screen when the flame is very close (at about 5 cm) to the lens?

Last Answer : (a) The student moves the lens away from the screen to focus the image because on moving the candle towards the lens, the image distance increases. (b)The size of the image increases when the object ... on the screen. A virtual image is formed behind the candle on the same side of the screen.

An important port of a photocopier is: (a) Deflation plates (b) Toner (c) Charging electrode (d) Printed head

Description : An important port of a photocopier is: (a) Deflation plates (b) Toner (c) Charging electrode (d) Printed head

Last Answer : (b) Toner

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Last Answer : a) I ∝ θ

The deflection system of a TV picture tube makes use of a) magnetic deflection b) electric deflection c) Both (a) and (b) d) None of these

Description : The deflection system of a TV picture tube makes use of a) magnetic deflection b) electric deflection c) Both (a) and (b) d) None of these

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A galvanometer of 65 Ω resistance gives full scale deflection with 4 mA current. In order to convert it into ammeter, the range of 10 A is connected with it, the shunt resistance should be a) 0.1 Ω b) 0.2 Ω c) 0.06 Ω d) 0.03 Ω

Description : A galvanometer of 65 Ω resistance gives full scale deflection with 4 mA current. In order to convert it into ammeter, the range of 10 A is connected with it, the shunt resistance should be a) 0.1 Ω b) 0.2 Ω c) 0.06 Ω d) 0.03 Ω

Last Answer : d) 0.03 Ω

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Last Answer : ANSWER: Z -- EMITTER, BASE, COLLECTOR

Draw and describe horizontal deflection system in CRO

Description : Draw and describe horizontal deflection system in CRO 

Last Answer : Block Diagram: Explanation: Input from vertical amplifier is given to Horizontal system. Trigger circuit: a. A trigger circuit is used to convert the incoming signal into trigger ... : Horizontal amplifier amplifies the signal & passes the signal to horizontal plates of CRT. 

Sketch Block diagram of vertical deflection system used in CRO.

Description : Sketch Block diagram of vertical deflection system used in CRO.

Last Answer : Block diagram of vertical deflection system used in CRO

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Description : List four controls on front panel of dual trace CRO. 

Last Answer : (i)X-shift on CRO: Controls the horizontal position of the display i.e moves the spot across the screen left and right. ii) CT MODE Button on CRO: To test different components iii) Symmetry knob on ... Button on CRO: In DUAL, operates as a DUAL trace scope in ALT or CHOP mode as selected.

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Description : ___________ remain undeflected in a magnetic field a) β particles b) α particles c) γ rays d) Proton beams

Last Answer : c) γ rays

___________ is not affected by a magnetic field a) Change in magnetic flux b) a moving electron c) a stationary proton d) current flowing in a conductor

Description : ___________ is not affected by a magnetic field a) Change in magnetic flux b) a moving electron c) a stationary proton d) current flowing in a conductor

Last Answer : c) a stationary proton

After long periods of use, a gray spot develops on the inside of a bulb. This is because of: A. The tungsten filament evaporates and collects there B. The heat of the bulb scorches the glass at the top C. Dust inside the bulb condenses on the top D. Glass undergoes a change due to the heat

Description : After long periods of use, a gray spot develops on the inside of a bulb. This is because of: A. The tungsten filament evaporates and collects there B. The heat of the bulb scorches the glass at the top C. Dust inside the bulb condenses on the top D. Glass undergoes a change due to the heat

Last Answer : ANSWER: A

After long periods of use, a grey spot develops on the inside of a bulb. This is because – (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Description : After long periods of use, a grey spot develops on the inside of a bulb. This is because – (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Last Answer : (3) dust inside the bulb condenses on the top Explanation: At high operating temperatures, tungsten evaporates from the filament and gradually forms a gray film on the inside of the bulb. The inert ... spot develops in the filament. When this happens, the filament will break and the bulb fails.

______ is slow moving “cord-like” mass of plasma across the sun’s surface. A. Filament B. Solar flare C. Prominence D. Solar spot

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A spot on the sun’s visible surface where the magnetic flux lines converge? A. Sunspot B. Filament C. Solar spot D. Prominence

Description : A spot on the sun’s visible surface where the magnetic flux lines converge? A. Sunspot B. Filament C. Solar spot D. Prominence

Last Answer : A. Sunspot

After long periods of use, a grey spot develops on the inside of a bulb. This is because (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Description : After long periods of use, a grey spot develops on the inside of a bulb. This is because (1) the tungsten filament evaporates and collects there (2) the heat of the bulb scorches the glass at the top (3) dust inside the bulb condenses on the top (4) glass undergoes a change due to the heat

Last Answer : dust inside the bulb condenses on the top

A well collimated parallel pencil of cathode rays falls through a potential difference `3kV` & enters the spacing between two parallel metallic plates

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Why did the deflection of the beam by magnet suggest that the cathode ray contained charged particles?

Description : Why did the deflection of the beam by magnet suggest that the cathode ray contained charged particles?

Last Answer : Need answer

Give the four figure grid reference of a settlement with Spot height 261 -SST 10th

Description : Give the four figure grid reference of a settlement with Spot height 261 -SST 10th

Last Answer : (a) (i) 1107 (ii) 1003 (b) 1606-Radial 1007-Trellis. (c) Two natural features seen in grid 0910 are: (i) River (ii) Broken ground. (d) The distance along the metalled road from the ... dry motors can cross this area. The map extract indicates that it is a dry summer season, rains have not come.

Anungrounded antennanearthe ground a. acts as a single antenna of twice the height b. is unlikely to need a ground screen c. acts as anantennaarray d. must be horizontally polarized

Description : Anungrounded antennanearthe ground a. acts as a single antenna of twice the height b. is unlikely to need a ground screen c. acts as anantennaarray d. must be horizontally polarized

Last Answer : c. acts as anantennaarray

Line spectrum is obtained on the screen in the form of lines if the slit in front of the source is a) narrow square b) broad square c) narrow rectangle d) broad rectangle

Description : Line spectrum is obtained on the screen in the form of lines if the slit in front of the source is a) narrow square b) broad square c) narrow rectangle d) broad rectangle

Last Answer : c) narrow rectangle

It's there a way to adjust the screen brightness on a Dell mini netbook ?

Description : It's there a way to adjust the screen brightness on a Dell mini netbook ?

Last Answer : Found this thread on the subject… http://www.mydellmini.com/forum/dell-mini-9-discussion/1028-screen-brighter-when-unplugged.html

A CRO screen has ten divisions on the horizontal scale. If a voltage signal 5 sin 314t+45 deg)is examined with a line base settings of 5 msec/div, the number of cycles of signal displayed on the screen will be a) 0.5 cycles b) 2.5 cycles c) 5 cycles d) 10 cycles

Description : A CRO screen has ten divisions on the horizontal scale. If a voltage signal 5 sin 314t+45 deg)is examined with a line base settings of 5 msec/div, the number of cycles of signal displayed on the screen will be a) 0.5 cycles b) 2.5 cycles c) 5 cycles d) 10 cycles

Last Answer : Ans: 2.5 cycles

The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X–plate input is

Description : The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X–plate input is 2 sin ωt, the Y–plate input is (1) 2 sin ωt (2) 2 sin (ωt + 45°) (3) 2 sin (ωt – 45°) (4) 22 sin ωt + 45°) 

Last Answer : The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X–plate input is 2 sin ωt, the Y–plate input is 2 sin ωt 

The two inputs of a CRO are fed with two stationary periodic signals. In the X-Y mode, the screen shows a

Description : The two inputs of a CRO are fed with two stationary periodic signals. In the X-Y mode, the screen shows a figure Which changes from ellipse to circle and back to ellipse with its major ... frequencies very close but not equal D) There is a constant but small phase difference between the signals

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The Lissajous pattern on the screen of a CRO is an ellipse with major axis in quadrant 2 and quadrant 4.

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°

Lissajous pattern obtained on a CRO screen is a circle. Frequency of two signals are

Description : Lissajous pattern obtained on a CRO screen is a circle. Frequency of two signals are   (a) Equal (b) Unequal (c) Zero (d) Infinity 

Last Answer : a

Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

Description : Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

Last Answer : (a) during the manufacturing process

A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type

Description : A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type

Last Answer : d) M–Type

Why are the ends of the deflection plates bent outward?

Description : Why are the ends of the deflection plates bent outward?

Last Answer : To permit wide-angle deflection of the bea

The horizontal-deflection plates are used to produce what function?

Description : The horizontal-deflection plates are used to produce what function?

Last Answer : Time and/or frequency relationships.

The vertical-deflection plates are used to reproduce what function?

Description : The vertical-deflection plates are used to reproduce what function?

Last Answer : Amplitude.

Is the deflection angle greater with higher or lower potential on the plates?

Description : Is the deflection angle greater with higher or lower potential on the plates?

Last Answer : Higher potential.

Why are the ends of the deflection plates bent outward?

Description : Why are the ends of the deflection plates bent outward?

Last Answer : To permit wide-angle deflection of the beam.

The horizontal-deflection plates are used to produce what function?

Description : The horizontal-deflection plates are used to produce what function?

Last Answer : Time and/or frequency relationships.

The vertical-deflection plates are used to reproduce what function?

Description : The vertical-deflection plates are used to reproduce what function?

Last Answer : Amplitude.

Is the deflection angle greater with higher or lower potential on the plates?

Description : Is the deflection angle greater with higher or lower potential on the plates?

Last Answer : Higher potential.