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- Question
Match the following:
List I (Characteristics) List II (Decrease) A. Paramagnetic 1. All dipoles are aligned is one preferred direction B. Ferromagnetic 2. Half the dipoles are aligned in opposite direction and have equal magnitude C. Antiferromagnetic 3. Half the dipoles (with equal magnitudes) are aligned in opposite direction to the other half having equal but lower magnitude D. Ferrimagnetic 4. All dipoles have equal magnitude but are randomly oriented
Options- A. A-4, B-3, C-2, D-1
- B. A-4, B-1, C-2, D-3
- C. A-2, B-1, C-4, D-3
- D. A-2, B-3, C-4, D-1
- Correct Answer
- A-4, B-1, C-2, D-3
- 1. The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond.
Options- A. 540
- B. 270
- C. 135
- D. 1080 Discuss
- 2. In carbon resistor colour code, the third band is red. It indicates
Options- A. two zeros
- B. three zeros
- C. multiplier is 0.01
- D. multiplier is 0.1 Discuss
- 3. Low-orbit satellites are not used for communications because they
Options- A. produce sonic booms
- B. do not provide 24 hour/ day contact to the users on Earth
- C. heat up and melt
- D. none Discuss
- 4. When a thyristor is conducting, the voltage drop across it is about
Options- A. 1 V
- B. 10 V
- C. 100 V
- D. 0.1 V Discuss
- 5. In a TWT the phase velocity of the axial component of the field on the slow wave structure is kept
Options- A. equal to velocity of electron
- B. slightly less than velocity of electron
- C. slightly more than velocity of electron
- D. equal to velocity of light in free space Discuss
- 6. Assertion (A): SUS is a PUT and avalanche diode connected between gate and cathode
Reason (R): SBS has two SUS inbuilt together and connected in anti-parallel
Options- A. Both A and R are correct and R is correct explanation of A
- B. Both A and R correct but R is not correct explanation of A
- C. A is correct but R is wrong
- D. A is wrong but R is correct Discuss
- 7. In a CRO which of the following is not a part of electron gun
Options- A. cathode
- B. grid
- C. accelerating anode
- D. X - Y plates Discuss
- 8. Which of the following can be accessed only sequentially?
Options- A. Floppy disk
- B. Hard disk
- C. Magnetic tape
- D. ROM Discuss
- 9. Which of the following is not a valid variable name in C?
Options- A. p o, t
- B. p o t
- C. po_t
- D. p_ot Discuss
- 10. A magnet does not attract
Options- A. nickel
- B. iron
- C. copper
- D. iron and copper Discuss
More questions
Correct Answer: 270
Correct Answer: two zeros
Correct Answer: heat up and melt
Correct Answer: 1 V
Correct Answer: equal to velocity of electron
Correct Answer: Both A and R correct but R is not correct explanation of A
Correct Answer: X - Y plates
Explanation:
Electron gun consists of cathode, grid and accelerating anode.
Correct Answer: Magnetic tape
Explanation:
Magnetic tape can be accessed only sequentially.
Correct Answer: p o, t
Explanation:
Comma is not allowed.
Correct Answer: copper
Explanation:
Only copper is non-magnetic.
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