30 Technical.
30 Aptitude(quant and verbal).
-->Technical includes question on NETWORK ANALYSIS,ELECTRONIC DEVICE AND CIRCUITS,ANALOG CIRCUITS,C -language,OPERATING SYSTEMS,COMPUTER NETWORKS
,DIGITAL ELECTRONICS etc.
They didn't ask any question on Electromagnetic Theory,Control Systems.
--> Aptitude includes English/Verbal (ANALOGIES,REASONING,SYNONYMS,ANTONYMS,Passage Arrangement,Short Passage and questions on it and Quant.
All the following are the important topics and also some topics covered the some previous Written Tests by Bosch.
TECHNICAL(Topics to be read before attending to the written )
1.Analog Circuits.
--BJT( Biasing,current/voltage series/shunt, Transfer Characteristics Location of Q-point,circuit diagrams of CB,CC,CE Self biasing Circuits).
--ADC/DAC formulas and methods.
--Power amplifiers(class A,AB,B,C,D and Transformer Coupled Amplifier), their efficiency..
--Standard Circuits of IC 741 and 555 timers.
2.Network Analysis/Circuits.
--Basic Circuits Analysis(Nodal Analysis,Mesh Analysis)
--Dependent Souces equivalent circuits.
--Theorems.
3.EDC
--JFET,BJT behaviour with temperature and other parametes.
eg.In n-channel JFET what will be the output if the drain current increase.A) DECREASES, B) INCREASES ,,,,,.......etc.
--Standard effects like Thermal Run away, Avalanche effect etc.
4.Digital and Micro Processor
--Boolean Algebra and code conversions (BCD to Excess -3).
--Semiconductor memories.
--Microprocessor (8085 only).
--TTL,CMOS etc logics voltages
--Address Notations for memories.
5.Computer Networks .
--Network topologies.
--TCP/IP.
--OSI models.
APTITUDE
1.Mathematics or Quantitative
--Boat,Age,Train,Profit and Losses ,Discounts,time and work,Percentage,SI,CI.
2.Verbal
--Antonyms,Synonyms,Passage.. and Logical reasoning like ........All X are Y. Some Y like Z .
--There will be only 7/9 questions on verbal.these are not soo tough but takes time for passage and answering.
NOTE:Its important that you must perfectly use the time. try answering Aptitude/Quant first and then technical.
All those who have poor technical knowledge must improve atleast in the topics like CN,NT,Digital.Also follow the previous papers which I have followed in order to get through this written test.
All the Best!!