TCS TECHNICAL INTERVIEW QUESTIONS ASKED DURING VARIOUS RECRUITMENT DRIVES

TCS Electronics Interview Questions

1.What is meant by D-FF?
2.What is the basic difference between Latches and Flip flops?
3.What is a multiplexer?
4.How can you convert an SR Flip-flop to a JK Flip-flop?
5.How can you convert an JK Flip-flop to a D Flip-flop?
6.What is Race-around problem? How can you rectify it?
7.Which semiconductor device is used as a voltage regulator and why?
8.What do you mean by an ideal voltage source?
9.What do you mean by zener breakdown and avalanche breakdown?
10.What are the different types of filters?
11.What is the need of filtering ideal response of filters and actual response of filters?
12.What is sampling theorem?
13.What is impulse response?
14.Explain the advantages and disadvantages of FIR filters compared to IIR counterparts.
15.What is CMRR? Explain briefly.
16.What do you mean by half-duplex and full-duplex communication? Explain briefly.
17.Which range of signals are used for terrestrial transmission?
18.What is the need for modulation?
19.Which type of modulation is used in TV transmission?
20.Why we use vestigial side band (VSB-C3F) transmission for picture?
21.When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency?
22.For asynchronous transmission, is it necessary to supply some synchronizing pulses additionally or to supply or to supply start and stop bit?
23.BPFSK is more efficient than BFSK in presence of noise. Why?
24.What is meant by pre-emphasis and de-emphasis?
25.What do you mean by 3 dB cutoff frequency? Why is it 3 dB, not 1 dB?
26.What do you mean by ASCII?                                                                                                        27.Diff b/n capacitor n condenser.
28.Pin config of 8085/8086.
29.Diodes n its types.
30. Logic families or, xor,nor,and using nand.                                                                              31.Draw the EXNOR gate and explain its operation with the truth table.                                                 32.What is PN junction,its working in various biases?
33.A circuit was given &asked to analyze its output at various conditions.
34.Different types of biasing.
35.Best amplifier?
36.Explain TDM,FDM.
37.How TV signals are transmitted?
38.What is constructor 

39.How a choke works?
40..How a bottle’s cap can be electronically opened and closed?
41.How to find the no.of pollen grains present in a flower? 

42.About transformers and its types.
43.Some basic questions in uP.
45.Interfacing –basics.
47.Mapping.                                                                                                                                                              48.Draw the diagram for the equation,
Y=[(A+B)(C+D)]+[(E+F)] USING FLIP FLOPS                                                 

49.Explain briefly waveguides                                                                                                     50.What is the purpose of load resistors?
51.Draw a simple op-amp amplifier circuit
52..What is the purpose of feedback resistor in inverting amplifier using op-amp?                                     53.What are code conversions?
54. Convert 32h into binary code
55. What are universal gates?
56. How universal gates are different from other gates?
57. Draw RS flip flop with its truth table?                                                                                     58.What is DMA? What do you know about it?
59. Define Amplitude Modulation and its frequency?
60. Define Frequency Modulation and its frequency?                                                                61.Define Handshake signals?                                                                                                     62.Addressing modes in 8085?                                                                                                          63. What is your Area of Interest?                                                                                              64.What is meant by control system?

      65.Different types of control system with example?

                                                                                                 

TCS Computers Interview Questions

1. What is your computer knowledge.
2.Pointers, pointer to pointer, Call by value/refrence.
3.Explain Recursion, Linked Lists, Header Files & math.h.
4.Polymorphism
5.Difference b/w the c& c++ ? Also features in c++.
6. Difference b/w java and c++?
7. What are the difference between program counter and stack pointer?
8. What are the various register in microprocessor. Explain them .how many bits are they?                    9. How much of C and C++ do u know?                                                                                             10.Write a Fibonacci series program in C++.