Electronics Communications Interview Questions
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hi sir i completed my b tech in ece in 2009 and i am interested in railway jobs and plz provide me with what type of questions will they ask along with model paper and my mail id is vaseem_basha@yahoo.co.in plzzzzzzzzzzzzzzz

1401

i want exam information bhel, nal, hal, bel you have any idea or any question papers or placement papers please send soon

Bhel,

2226

plz tll me wch area i will prepare 4 IOCL EXAM............

IOCL,

1693

who are the good electronic and communication engineer and what they should know

2 5455

what is the difference between electronics and electricals?

7 6490

why thee microprocessor number starts with four digit?

Infosys,

4 5917

why diode is called diode?

Bhel, Iqra University,

5 17267

what is the difference between electronics and electricals?

3 4803

in rectifier circuit,we are using the capacitor as a filter to remove the ac signal.but capacitor blocks dc & allows only ac. explain about it?

4 7057

which is osillator is most used in PCB design? why?

3 5217

why r u want to join this company

1 2613

which is the best institute to learn .net and do project on it.

1 2728

difference between cell and battery?

TATA,

5 7000

difference between dielectrics and insulators give some examples

TATA,

3 6180

how works an op-amp

1 3289


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Un-Answered Questions { Electronics Communications }

What is difference between a multiplexer and encoder? Also what is the between demultiplexer and decoder?

511


What are the advantages and disadvantages of bcd?

687


What is meant by gain-bandwidth product? What is its significance?

652


Explain design 8421 to 2421 binary code converter?

513


ORACLE/SQL-RDBMS 1.Max (), Min () Functions, 2. Order by, Group by Functions, 3. Sql Pipe Functions 4. Truncate Functions Which Part of Sql? DDL, DML, or TCL 5. Find Out Primary keys in databases 6. Select Customers who have same city Based on constraints based on index based on view based on group by

1549






Draw the circuit diagram of 1φ auto sequential commutated current source inverter and explain its operation with equivalent circuits for different modes and necessary waveforms?

648


What is the function of freewheeling diodes in controlled rectifier?

674


Define what is a p-n junction?

653


Define what is a high-pass filter?

568


In explain what way is the voltage follower a special case of the non-inverting amplifier?

568


oracle 1st round What are the different types of joins? Explain normalization with examples. What cursor type do you use to retrieve multiple recordsets? Diffrence between a "where" clause and a "having" clause What is the difference between "procedure" and "function"? How will you copy the structure of a table without copying the data? How to find out the database name from SQL*PLUS command prompt? Tadeoffs with having indexes Talk about "Exception Handling" in PL/SQL? What is the diference between "NULL in C" and "NULL in Oracle?" What is Pro*C? What is OCI? Give some examples of Analytical functions. What is the difference between "translate" and "replace"? What is DYNAMIC SQL method 4? How to remove duplicate records from a table? What is the use of ANALYZing the tables? How to run SQL script from a Unix Shell? What is a "transaction"? Why are they necessary? Explain Normalizationa dn Denormalization with examples. When do you get contraint violtaion? What are the types of constraints? How to convert RAW datatype into TEXT? Difference - Primary Key and Aggregate Key How functional dependency is related to database table design? What is a "trigger"? Why can a "group by" or "order by" clause be expensive to process? What are "HINTS"? What is "index covering" of a query? What is a VIEW? How to get script for a view? What are the Large object types suported by Oracle? What is SQL*Loader? Difference between "VARCHAR" and "VARCHAR2" datatypes. What is the difference among "dropping a table", "truncating a table" and "deleting all records" from a table. Difference between "ORACLE" and "MICROSOFT ACCESS" databases. How to create a database link ? PL/SQL interview questions... Normalize many to many relationships Difference - Equijoin and union What is TEMP table space in Oracle, what is rollback segment How do we find row chaining? Pattern matching operators Features in oracle 9i and 10g Why truncating table is faster than delete copy commit syntax Convert Zulu time zone to US Eastern time zone Difference - union and union all Difference - Group by, Order by clause Which Ranking functions are available? Difference - Decode, NVL, NVL2 Tradeoffs of using partitioned tables How can we call stored procedure in SQL query What are the restrictions on calling PL/SQL from SQL Why EXISTS is preferable to distinct Give 2 examples of avoiding unnecessary parsing.

3139


What are the limitations of the basic differentiator circuit?

819


4 Stage ripple counter with delay(f/f) 10msec. How much time it takes for a state to change. 4*10=40.

633


Differentiate between conductor and inductor.

564


How many TRXs are supported in Nokia Metrosite

1870