| 1 |
Thermosouple is an arrangement of two different metals: |
- A. Two convert heat energy into electrical energy
- B. To produce more heat
- C. To convert heat energy into chemical energy
- D. To convert electrical energy into heat energy
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| 2 |
the current which flows from a point at higher. potential to point at lower potential is called. |
- A. Electric current
- B. Conventional current
- C. Either of these
- D. None of above
|
| 3 |
Three resistors of resistance R each are combined in various ways, Which of the following cannot be obtained? |
- A. 3 RΩ
- B. 2R /4Ω
- C. R/3Ω
- D. 2R /3Ω
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| 4 |
The current flowing through each resistor of equal resistance in parallel combination is. |
- A. Same
- B. Different
- C. Zero
- D. Infinite
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| 5 |
The thermistors convert changes of temperature into. |
- A. Light energy
- B. Electric voltage
- C. Heat
- D. Sound
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| 6 |
The resistivity of two wires is<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>1</sub> and</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>2</sub> which are connected in series. If there dimentions are same then the equivalent resistivity of the combination will be:</span> |
- A. (<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>1</sub> +</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ<sub>2</sub></span>)
- B. 1/<span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>1</sub>+ 1/</span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>2</sub></span>
- C. <span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub style="">1</sub>+</span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub style="">2</sub></span>/2
- D. <span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>1/</sub></span><span style="font-family: arial, sans-serif; font-size: 16px; color: rgb(34, 34, 34);">ρ<sub>2</sub></span>
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| 7 |
If 1 x 10<sup>7</sup> electrons passes through a conductor in 1.0 micro second , then the current is. |
- A. 2 A
- B. 1.6 A
- C. 2.6 x 10<sup>-6</sup> A
- D. 1.6 x 10<sup>-6</sup> A
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| 8 |
In carbon resistors, then value of Blue colour is. |
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| 9 |
Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be. |
- A. 4 Ohm
- B. 2 Ohm
- C. 1 Ohm
- D. 8 Ohm
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| 10 |
Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is. |
- A. 10 kelvin
- B. 70 kelvin
- C. 200 kelvin
- D. 35 kelvin
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