50 Professional Questions with Complete Answers
Basic Knowledge
Q1. Fuse ka Reference Designator kya hota hai?
Answer:
F
Example:
- F1
- F101
- PF1
- FUSB1
Q2. Fuse ki Full Form kya hoti hai?
Answer:
Fuse kisi phrase ka short form nahi hai. Is ka naam hi Fuse hai.
Q3. Fuse ka symbol kaisa hota hai?
Answer:
Schematic mein Fuse ko ek chhoti rectangular line ya protection symbol se show kiya jata hai.
Q4. Fuse ka main kaam kya hota hai?
Answer:
- Circuit ko over-current se bachana
- Short Circuit se protection dena
- Mehngi ICs aur motherboard ko damage hone se bachana
Q5. Laptop motherboard mein Fuse kahan use hota hai?
Answer:
- DC Input
- LCD Power
- LED Backlight
- USB Ports
- Battery Line
- Fan Circuit
- Audio Circuit
- Display Circuit
Q6. Fuse ki unit kya hoti hai?
Answer:
Fuse ki apni koi unit nahi hoti.
Is ki Current Rating (Ampere) aur Voltage Rating (Volt) hoti hai.
Q7. Fuse ki Current Rating kya hoti hai?
Answer:
Maximum current jo Fuse safely pass kar sakta hai.
Example:
- 1A
- 2A
- 3A
- 5A
Q8. Fuse ki Voltage Rating kya hoti hai?
Answer:
Maximum voltage jo Fuse safely handle kar sakta hai.
Example:
- 24V
- 32V
- 63V
Q9. Fuse kab blow hota hai?
Answer:
- Over Current
- Short Circuit
- Wrong Adapter
- Water Damage
- Reverse Polarity
Q10. Fuse blow hone ka matlab kya hai?
Answer:
Circuit ne apni protection complete kar li hai aur current aage nahi ja raha.
Fuse Types
Q11. Glass Fuse kya hota hai?
Answer:
Transparent glass body wala fuse.
Purane electronics mein zyada use hota tha.
Q12. SMD Fuse kya hota hai?
Answer:
Surface Mount Fuse.
Laptop motherboard mein sab se zyada isi ka use hota hai.
Q13. Polyfuse kya hota hai?
Answer:
Resettable Fuse.
Fault khatam hone ke baad dobara kaam kar sakta hai.
Q14. Fast Blow Fuse kya hota hai?
Answer:
Thodi si extra current par bhi foran open ho jata hai.
Q15. Slow Blow Fuse kya hota hai?
Answer:
Starting surge current ko kuch der tolerate karta hai.
Testing
Q16. Fuse ko multimeter se kis mode mein check karte hain?
Answer:
Continuity Mode
Q17. Good Fuse ki reading kya hoti hai?
Answer:
- Continuity Beep
- Lagbhag 0Ω Resistance
Q18. Open Fuse ki reading kya hoti hai?
Answer:
- OL
- No Beep
Q19. Board par Fuse kaise check karte hain?
Answer:
Fuse ke dono terminals par continuity aur voltage check karte hain.
Q20. Fuse remove kiye baghair check ho sakta hai?
Answer:
Haan, aksar board par hi check kiya jata hai.
Practical Questions
Q21. LCD Fuse ka kya kaam hota hai?
Answer:
LCD ko supply dene wali voltage ki protection.
Q22. Backlight Fuse ka kya kaam hota hai?
Answer:
LED Backlight Circuit ko protect karta hai.
Q23. USB Fuse ka kya kaam hota hai?
Answer:
USB Port ko over-current se bachata hai.
Q24. Battery Fuse ka kya kaam hota hai?
Answer:
Battery Charging aur Discharging line ko protect karta hai.
Q25. Fan Circuit mein Fuse kyun hota hai?
Answer:
Fan short ho jaye to motherboard ko bachane ke liye.
Fault Finding
Q26. Fuse blow hone ke baad laptop ON hoga?
Answer:
Jis circuit ka fuse blow hua hai woh circuit kaam nahi karega. Agar main input fuse blow ho to laptop ON nahi hoga.
Q27. LCD Fuse blow ho jaye to kya symptoms honge?
Answer:
- Black Screen
- No Display
- External Display chal sakti hai
Q28. USB Fuse blow ho jaye to?
Answer:
USB Port power nahi dega.
Q29. Backlight Fuse blow ho jaye to?
Answer:
Image hogi lekin light nahi hogi.
Torch se image nazar aa sakti hai.
Q30. Battery Fuse blow ho jaye to?
Answer:
Battery charge nahi hogi.
Advanced Questions
Q31. Kya Fuse ko wire se short kar dena chahiye?
Answer:
Kabhi nahi.
Is se motherboard ko serious damage ho sakta hai.
Q32. Same rating ka Fuse lagana zaroori hai?
Answer:
Haan.
Current aur Voltage Rating match honi chahiye.
Q33. Zyada Ampere ka Fuse lagane se kya hoga?
Answer:
Protection kam ho jayegi aur motherboard jal sakta hai.
Q34. Kam Ampere ka Fuse lagane se?
Answer:
Fuse jaldi blow ho jayega.
Q35. Fuse replace karne se pehle kya check karna chahiye?
Answer:
- Short to Ground
- Input Voltage
- Faulty Component
- Schematic
Shop Level Questions
Q36. Boardview mein Fuse kaise search karte ho?
Answer:
Reference F ya PF se.
Example:
- F1
- PF101
Q37. Schematic mein Fuse identify kaise karte ho?
Answer:
Reference "F" aur uske symbol se.
Q38. Input Fuse ke dono sides 19V hain. Kya matlab?
Answer:
Fuse theek hai aur current pass kar raha hai.
Q39. Input Fuse ki ek side 19V aur doosri side 0V ho to?
Answer:
Fuse open (blown) ho sakta hai.
Q40. Fuse replace karne ke baad dobara blow ho gaya. Kya karoge?
Answer:
Asal fault dhoondo. Sirf fuse badalne se problem solve nahi hoti.
Q41. Fuse ke baad short mil raha hai. Sab se pehle kya check karoge?
Answer:
- MOSFET
- Capacitors
- Charger IC
- TVS Diode
Q42. Laptop dead hai aur Fuse theek hai. Agla step?
Answer:
- Input MOSFET
- Charger IC
- 3.3V / 5V Rails
Q43. Kya har laptop mein sirf ek Fuse hota hai?
Answer:
Nahi.
Ek motherboard mein kai fuses hote hain.
Q44. Motherboard par sab se important Fuse kaunsa hota hai?
Answer:
Main DC Input Fuse.
Q45. LCD Fuse ki value schematic se kaise pata karte ho?
Answer:
Reference Designator aur Parts List/Datasheet dekh kar.
Q46. Professional Technician Fuse ko kis kis cheez ke saath check karta hai?
Answer:
- Continuity
- Voltage
- Resistance
- Current Path
- Schematic
Q47. Interview Question
Question:
Fuse theek hai lekin voltage aage nahi ja rahi. Kya problem ho sakti hai?
Answer:
Fuse ke baad MOSFET OFF ho sakta hai, Charger IC enable nahi de raha, ya aage open circuit ho sakta hai.
Q48. Interview Question
Question:
Har blown fuse replace kar dena sahi approach hai?
Answer:
Nahi. Pehle root cause identify karo. Warna naya fuse bhi dobara blow ho jayega.
Q49. Professional Rule
Question:
Fuse ka sab se important rule kya hai?
Answer:
"Fuse kabhi wajah ke baghair nahi jalta. Hamesha us wajah ko dhoondo jis ki wajah se fuse blow hua."
Q50. Shop Final Practical Question
Question:
Dell laptop dead hai. Adapter par 19V aa rahi hai. Input Fuse open hai. Tumhara complete troubleshooting sequence likho.
Answer:
- Adapter ki voltage verify karo.
- Input Fuse continuity check karo.
- Fuse ke baad short to ground check karo.
- TVS Diode test karo.
- Input MOSFET Drain-Source short check karo.
- Charger IC aur uske surrounding capacitors check karo.
- Agar short milta hai to pehle short remove karo.
- Us ke baad hi same rating ka naya fuse lagao.
- Dobara power de kar voltage rails verify karo.
- 3.3V ALW aur 5V ALW generate ho rahi hain ya nahi check karo.
📚 Agla Chapter (Chapter 7)
Ab hum Crystal & Oscillator (Y/X) par jayenge.
Is chapter mein:
- Crystal
- Oscillator
- RTC Crystal
- CPU Clock
- 32.768kHz Crystal
- 25MHz Crystal
- 24MHz Crystal
- Clock Generator
- Frequency Measurement
- Oscilloscope Testing
- Real Shop Troubleshooting
Yeh chapter laptop motherboard repair mein clock signal samajhne ke liye bohat important hai. Baad mein hum BIOS IC, KBC, CPU, PCH aur Power Sequence ko aur bhi advanced level par cover karenge.
0 Comments