1. The output of a NAND gate is 0 only when:
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Unit 18: Electronics + Unit 19: Electromagnetism
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Question 1 of 20
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2. Increasing the number of turns in a coil will:
3. Which impurity is added to make a P-type semiconductor?
4. Electromagnetic induction occurs when:
5. Which device is considered the brain of digital systems?
6. When the direction of current is reversed, the direction of force:
7. Magnetic flux is measured in:
8. CRO is mainly used to observe:
9. The turning effect of force is called:
10. The angle made by Earth’s magnetic field with the horizontal is called:
11. The induced current flows in such a direction as to oppose the change producing it according to:
12. LEDs are preferred over filament bulbs because they:
13. Which charge carriers are majority carriers in N-type semiconductors?
14. In a transistor, current amplification occurs due to:
15. The working principle of electric generator is:
16. In an ideal transformer, power input is:
17. The main advantage of digital electronics is:
18. The screen of a CRO is coated with:
19. Which device converts mechanical energy into electrical energy?
20. The output of OR gate is 0 when: