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The vertical gain control of CRO is set at a deflection factor of 5 V/cm. An unknown sinusoidal is applied to Y-input. A 20 cm long straight line trace is observed, what will the ac voltage be?
- a)17.677 V
- b)35.35 V
- c)100 V
- d)70.71 V
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The vertical gain control of CRO is set at a deflection factor of 5 V/...
Deflection sensitivity is defined as,
Deflection factor is the reciprocal of deflection sensitivity.
Most Upvoted Answer
The vertical gain control of CRO is set at a deflection factor of 5 V/...
To solve this problem, we need to understand the deflection factor of the CRO and how it relates to the voltage applied to the Y-input.
1. Understanding the deflection factor:
The deflection factor of a CRO is the ratio of the vertical deflection of the electron beam on the screen to the corresponding input voltage. It is usually expressed in volts per centimeter (V/cm) or volts per division (V/div). In this case, the deflection factor is given as 5 V/cm.
2. Determining the length of the trace:
The length of the straight line trace observed on the CRO screen is given as 20 cm. This means that the vertical deflection of the electron beam is 20 cm.
3. Calculating the voltage:
Using the deflection factor, we can calculate the voltage applied to the Y-input. Since the deflection factor is 5 V/cm, and the vertical deflection is 20 cm, the voltage can be calculated as:
Voltage = Deflection factor × Vertical deflection
Voltage = 5 V/cm × 20 cm
Voltage = 100 V
Therefore, the AC voltage applied to the Y-input is 100 V.
4. Selecting the correct answer:
Among the given options, option C is 100 V, which matches our calculated result. Hence, the correct answer is option C.
In summary, the vertical gain control of the CRO is set at a deflection factor of 5 V/cm. A 20 cm long straight line trace is observed, indicating a vertical deflection of 20 cm. Using the deflection factor, we calculate the voltage applied to the Y-input as 100 V, confirming option C as the correct answer.
1. Understanding the deflection factor:
The deflection factor of a CRO is the ratio of the vertical deflection of the electron beam on the screen to the corresponding input voltage. It is usually expressed in volts per centimeter (V/cm) or volts per division (V/div). In this case, the deflection factor is given as 5 V/cm.
2. Determining the length of the trace:
The length of the straight line trace observed on the CRO screen is given as 20 cm. This means that the vertical deflection of the electron beam is 20 cm.
3. Calculating the voltage:
Using the deflection factor, we can calculate the voltage applied to the Y-input. Since the deflection factor is 5 V/cm, and the vertical deflection is 20 cm, the voltage can be calculated as:
Voltage = Deflection factor × Vertical deflection
Voltage = 5 V/cm × 20 cm
Voltage = 100 V
Therefore, the AC voltage applied to the Y-input is 100 V.
4. Selecting the correct answer:
Among the given options, option C is 100 V, which matches our calculated result. Hence, the correct answer is option C.
In summary, the vertical gain control of the CRO is set at a deflection factor of 5 V/cm. A 20 cm long straight line trace is observed, indicating a vertical deflection of 20 cm. Using the deflection factor, we calculate the voltage applied to the Y-input as 100 V, confirming option C as the correct answer.
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The vertical gain control of CRO is set at a deflection factor of 5 V/cm. An unknown sinusoidal is applied to Y-input. A 20 cm long straight line trace is observed, what will the ac voltage be?a)17.677 Vb)35.35 Vc)100 Vd)70.71 VCorrect answer is option 'C'. Can you explain this answer?
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