In S.I engine, the knocking occurs at the end of combustion whereas in C.I engine knocking occurs at the very beginning of combustion. The detonation in the S.I engine is of a homogeneous charge causing very high rate of pressure rise and very high maximum pressure. In the C.I engine, the fuel and air are
Comparison of Knock in S.I and C.I Engines Read More »
In petrol engines, a carburetor is employed to mix air and fuel supply system in the desired ratio. But in diesel engines, air alone is compressed in the cylinder. The high pressure is about 35 to 40bar and the temperature of this air after compression is about 600°C. At the end of compression stroke, the
Fuel Supply System in C.I (Diesel) Engine Read More »
A design of transformers consists of two windings coupled through a magnetic medium. The two windings work at different voltage level. The two windings of the transformer are called High voltage winding and Low voltage winding. Both the windings are wound on a common core. One of the winding is connected to ac supply and
Design of Transformers – Transformer Construction Read More »
It is likely that we discover later, the previously allocated memory is not sufficient and we need additional space for more elements. It is also possible that the memory allocated is much larger than necessary and we want to reduce it. In both the cases, we can change the memory size already allocated with the
Realloc in C – Altering the Size of a Block Read More »
Surveillance generally refers to monitoring or observing a person or a group of people from a certain distance, frequently, although not necessarily, comprising the use of electronic equipment and/or other technological devices. Wireless surveillance balloon equipment is typically used in warfare and/or in counter-insurgency operations to monitor the activities of an enemy from a distance,
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Engineering design is a complex process which involves interaction between many skills and discipline. In traditional design, the components are designed through mechanical, hydraulic or pneumatic components and principles. But in a mechatronics approach, mechanical, electronics, computer technology and control engineering principles are included to design a system. Figure shows the schematic of traditional and
Traditional and Mechatronics Design – Pedagogy Zone Read More »
The mechatronics system design process consists of the following stages. Stage 1: Need for design The mechatronics system design process begins with a need. Needs are usually arise from dissatisfaction with an existing situation. Needs may come from inputs of operating or service personal or from a customer through sales or marketing representatives. They may
Mechatronics System Design Stages Read More »
However, the difference between PLC and PC certain characteristics as follows. The architecture of a PLC is basically the same as that of a general purpose computer. The application of PLC is for industrial environment with wide variation in atmosphere conditions and PLC is very rigid and compact. The PLC programming can be accomplished in
Difference Between PLC and PC – PLC’s Vs Computers Read More »
Data manipulation instructions enable the PLCs to take on additional characteristics that are beyond the conventional relay equivalent instruction. It allows the movement, manipulation or storage of data in either single or multi-word groups from one data memory area of the PLC to another. Therefore, data manipulation can be divided into many categories Data transfer
Data Manipulation – Data Handling Instructions in PLC Read More »
The “brain” of the system which has three sub-parts. Central Processing Unit (CPU) (i) Microprocessor: Microprocessor caries out mathematic and logical operations. (ii) Memory: The area of the CPU in which data and information is stored and retrieved. It holds the system software and user program. (iii) Power supply: The electrical supply that converts Alternating
Central Processing Unit (CPU) – Input and Output Modules Read More »