অনুগ্রহ করে অপেক্ষা করুন। ছবি আটো ইন্সার্ট হবে।
এই প্রশ্নো ও উত্তর গুলো ইন্টারনটে এর বিভিন্ন ওয়েব পেইজ খুজে বের করে একসাথে এডিট করে একত্রিত করা হয়েছে।
what is meant by armature reaction?
Answer:The effect of armature flu to main flux is called armature reaction. The armature flux may support main flux or opposes main flux.
what happen if we give 220 volts dc supply to d bulb r tube light?
Answer:Bulbs [devices] for AC are designed to operate such that it offers high impedance to AC supply. Normally they have low resistance. When DC supply is applied, due to low resistance, the current through lamp would be so high that it may damage the bulb element.
Which motor has high Starting Torque and Staring current DC motor, Induction motor or Synchronous motor?
Answer
C Series motor has high starting torque. We can not start the Induction motor and Synchronous motors on load, but can not start the DC series motor without load.what is ACSR cable and where we use it?
Answer:ACSR means Aluminium conductor steel reinforced, this conductor is used in transmission & distribution.
whats is MARX CIRCUIT?
Answer:It is used with generators for charging a number of capacitor in parallel and discharging them in series.It is used when voltage required for testing is higher than the available.
What is encoder, how it function?
Answer:An encoder is a device used to change a signal (such as a bitstream) or data into a code. The code may serve any of a number of purposes such as compressing information for transmission or storage, encrypting or adding redundancies to the input code, or translating from one code to another. This is usually done by means of a programmed algorithm,especially if any part is digital, while most analog encoding is done with analog circuitry.
What are the advantages of speed control using thyristor?
Answer:Advantages :1. Fast Switching Characterstics than Mosfet, BJT, IGBT 2. Low cost 3. Higher Accurate.
Why Human body feel Electric shock ?? n in an Electric train during running , We did nt feel any Shock ? why?
Answer:Unfortunately our body is a pretty good conductor of electricity, The golden rule is Current takes the lowest resistant path if you have insulation to our feet as the circuit is not complete (wearing rubber footwear which doing some repairs is advisable as our footwear is a high resistance path not much current flows through our body).The electric train is well insulated from its electrical system.
what is the principle of motor?
Answer:Whenever a current carrying conductor is placed in an magnetic field it produce turning or twisting movemnt is called as torque.
why, when birds sit on transmission lines or current wires doesn't get shock?
Answer:Its true that if birds touch the single one line (phase or neutral) they don't get electrical shock... if birds touch 2 lines than the circuit is closed and they get electrical shock.. so if a human touch single one line(phase) then he doesn't get shock if he is in the air (not touching - standing on the ground if he is standing on the ground then touching the line (phase) he will get a shock because the ground on what we standing is like line (ground bed - like neutral)। and in the most of electric lines the neutral is grounded..so that means that human who touch the line closes the circuit between phase and neutral.
যদি কোনো প্রশ্নো ও উত্তর এর মাঝে মিল খুজে না পান অথবা ভুল খুজে পান তাহলে মন্ত্যবে প্রকাশ করুন।
ধন্যবাদ।
