| 1 |
<p class="MsoNormal">The output of a NAND gate is 0 when:<o:p></o:p></p> |
- A. <p class="MsoNormal">Both of its inputs are 0<o:p></o:p></p>
- B. <p class="MsoNormal">Both of its inputs are 1<o:p></o:p></p>
- C. <p class="MsoNormal">Any of its inputs is 0<o:p></o:p></p>
- D. <p class="MsoNormal">Any of its inputs is 1<o:p></o:p></p>
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| 2 |
Which device is used to increases / decreases A.C Voltage? |
- A. Electric motor
- B. Transformer
- C. A.C Generator
- D. Solenoid
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| 3 |
<p class="MsoNormal">The refractive index of ice is:<o:p></o:p></p> |
- A. <p class="MsoNormal">1.00<o:p></o:p></p>
- B. <p class="MsoNormal">1.33<o:p></o:p></p>
- C. <p class="MsoNormal">1.31<o:p></o:p></p>
- D. <p class="MsoNormal">2.42<o:p></o:p></p>
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| 4 |
The coil of a transformer which is connected to A.C is called: |
- A. Primary coil
- B. Secondary coil
- C. Field coil
- D. Armature coil
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| 5 |
Transformer works on _______ supply. |
- A. A.C
- B. D.C
- C. Battery
- D. Both A and B
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| 6 |
Which part of a D.C. motor reverses the direction of current through the coil every half-cycle. |
- A. The armature
- B. The commutator
- C. The burshes
- D. The slip rings
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| 7 |
<p class="MsoNormal">An object gains excess negative charge after being rubbed
against another object, which is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Neutral<o:p></o:p></p>
- B. <p class="MsoNormal">Negatively charged<o:p></o:p></p>
- C. <p class="MsoNormal">Positively charged<o:p></o:p></p>
- D. <p class="MsoNormal">Either, a, b or c<o:p></o:p></p>
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| 8 |
The direction of induced e.m.f. in a circuit is in accordance with conservation of. |
- A. Mass
- B. Charge
- C. Momentum
- D. Energy
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| 9 |
In A.C. generator flux will be zero if coil is to the field. |
- A. 90<sup>o</sup>
- B. 45<sup>o</sup>
- C. Parallel
- D. Inclined
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| 10 |
<p class="MsoNormal">The angle at which prism deviates the incident ray is
called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Angle of incident<o:p></o:p></p>
- B. <p class="MsoNormal">Angle of reflection<o:p></o:p></p>
- C. <p class="MsoNormal">Angle of deviation<o:p></o:p></p>
- D. <p class="MsoNormal">Angle of minimum deviation<o:p></o:p></p>
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