Discussion
A displacement transducer with a shaft stroke of 3.0 cm, is applied to as shown in figure. The total resistance of the potentiometer is 5 k Ω. The input voltage is 5 V, when the wiper is at 0.9 cm. The value of the output voltage is given by
Answer: A
The output voltage of the potentiometer is the input voltage multiplied by the fraction of the stroke at which the wiper stands. The wiper is at 0.9 cm out of a 3.0 cm stroke, so
\[V_{out} = V_{in} \times \dfrac{0.9}{3.0} = 5 \times 0.3\]
\[V_{out} = 1.5\ \text{V}\]
The output is thus 1.5 V, the first option. The potentiometer only divides the input, so the output cannot exceed 5 V, which rules out 15 V, and 5 V would need the wiper at the very top. A value of 0.15 V is a factor of ten too small.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development