| 1 |
<p class="MsoNormal">Spherical mirrors are used in:<o:p></o:p></p> |
- A. <p class="MsoNormal">Medical<o:p></o:p></p>
- B. <p class="MsoNormal">Search light<o:p></o:p></p>
- C. <p class="MsoNormal">Microscope<o:p></o:p></p>
- D. <p class="MsoNormal">All of these<o:p></o:p></p>
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| 2 |
<p class="MsoNormal">Bouncing back of light after striking the surface is called:<o:p></o:p></p> |
- A. <span style="font-size:11.0pt;line-height:107%;
font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-fareast-font-family:
Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:Arial;mso-bidi-theme-font:minor-bidi;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Refraction</span>
- B. <p class="MsoNormal">Reflection<o:p></o:p></p>
- C. <p class="MsoNormal">Diffraction<o:p></o:p></p>
- D. <p class="MsoNormal">Interference<o:p></o:p></p>
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| 3 |
Which type of energy is converted into mechanical energy in the D.C. Motor. |
- A. Magnetic energy
- B. Heat energy
- C. Electrical energy
- D. Chemical energy
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| 4 |
<p class="MsoNormal">In NOT gate number of input terminals is/are:<o:p></o:p></p> |
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| 5 |
If the change of current in a circuit induces a current in another circuit, this phenomena is known as: |
- A. Self induction
- B. Mutual induction
- C. Electromagnetic induction
- D. None mutual induction
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| 6 |
<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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| 7 |
<p class="MsoNormal">The output of a two input NOR gate is 1 when:<o:p></o:p></p> |
- A. <p class="MsoNormal">A is 1 and B is 0<o:p></o:p></p>
- B. <p class="MsoNormal">A is 0 and B is 1<o:p></o:p></p>
- C. <p class="MsoNormal">Both a and b are 0<o:p></o:p></p>
- D. <p class="MsoNormal">Both a and b are 1<o:p></o:p></p>
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| 8 |
The step-up transformer |
- A. Increases the input current
- B. Increase the input voltage
- C. Has more turns in the primary
- D. Has less turns in hte secondary coil
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| 9 |
According to Fleming's left hand rule the direction of magnetic field is indicated by: |
- A. Thumb
- B. Forefinger
- C. Middle finger
- D. Right hand rule
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| 10 |
<p class="MsoNormal">George Boole invented:<o:p></o:p></p> |
- A. <p class="MsoNormal">Boolean algebra<o:p></o:p></p>
- B. <p class="MsoNormal">Arithmetic algebra<o:p></o:p></p>
- C. <p class="MsoNormal">Mean algebra<o:p></o:p></p>
- D. <p class="MsoNormal">Geometry<o:p></o:p></p>
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