am going 2 write railway exam 4 d post of section engineer..i wnt 2 knw abt d que pattern n d previous year que papers

0 Answers   RRB,

---

what is electronics?

8 Answers   ABB,

---

What is a half-adder?

0 Answers  

---

What is an idea current source?

0 Answers  

---

what is side band theory

2 Answers   TCS,

---

sir, i have completed engineering diploma in electronics and now got the call letter for written exam for the post "junior engineer" from rrb chennai. could you help me about the model and type of questions that i should prepair?

0 Answers  

---

Define what is a p-n junction?

0 Answers  

---

main difference between electrical& electronics?& what is electronics?

10 Answers  

---

How will you send and receive data to a micro-processor? (One method is I/O mapped I/O which is the other one?)

1 Answers   DRDO,

---

How to increase the gain and directivity of an antenna?

0 Answers  

---

I am stuck up with a question on appending of two arrays I am writing the code for the same, I am appending two strings this way int main() { string s1 = "Welcome to C++"; string s2 = "C++ improves the logic ability"; string s3 = s1 + s2; cout<<s3<<endl; } But if I go ahead with the integer datatype , it doesnt work int main() { int arr[4] = {2,3,4,5}; int arr1[4] = {6,7,8,9}; int arr3[9] ; arr3 = arr + arr1;//displays error arr3 = arr ++ arr1; // works properly } Can anyone please clear my doubt in this question ?

0 Answers   Siemens,

---

what is integral of body?

0 Answers   Infosys,

---