ভাইবা প্রশ্ন

ফ্রেশ ইঞ্জিনিয়ারদের কাজে আসতে পারে।
1. What is the formula for RPM?
Ans: Ns=120f/p
2. What is the formula for 3phase Power?
Ans: P=root3.VICos¤
3. What is the standard value of Power Factor?
Ans: 0.8
4. What is the frequency for Direct Current?
Ans: 0
5. Whats are the stroke of 4 Stroke Engine?
Ans: Intake, Compression, Combustion, Exhaust
6. What is the full form of IGBT?
Ans: Insulated Gate Bi-Polar Transistor.
7. Write down the abbreviation of
ACB
VCB
MCCB
REB
PBS
Ans:
ACB=Air Circuit Breaker
VCB=Vacuum Circuit Breaker
MCCB=Molded Case Circuit Breaker
REB=Rural Electrification Board
PBS=Palli Bidyut Shamity
8. Types of Transistor?
Ans: 2 types. (1)NPN (2)PNP
9. Conditions of Synchronization between two or more Generator?
Ans:
a. Same Phase sequence
b. Same Frequency
c. same voltage
10. Kinds of Electrical Fault?
Ans:
a. Symmetrical Fault
b. Unsymmetrical Fault