Dynamic memory allocation array in c. memory is allocated at compile time. memory is allocated at run time. Problem with Array Sometimes Amount of data cannot be predicted beforehand Number of data items keeps changing during program execution Example: Search for an element in an array of N elements One solution: find the maximum possible value of N and allocate an array
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C++ Inheritance Example class Rectangle { }; class Area : public Rectangle { }; class Perimeter: public Rectangle { }; class Animal { public: int legs = 4; }; class Dog : public Animal { public: int tail = 1; }; int mainQ { Dog d; cout «”Legs are: “«d.legs«endl; cout« “Tail is: “«d.tail; }
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Static Balancing A system of rotating masses is said to be in static balance if the combined mass centre of the system lies on the axis of rotation, static vs dynamic balancing. Condition for static balancing : The net dynamic force acting on the shaft is equal to zero. In other words, the centre of
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A machine has many moving parts. Some machines have balancing of rotating masses motion and some of them have reciprocating motion. If these moving parts are not in complete balance, inertia forces are set up which may cause excessive noise, vibration, wear and tear of the system. Thus, balancing is the process of designing or
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In this type of optical comparator, a small plunger displacement is amplified by both mechanical and optical system. The amplification is first done by a pivoted lever and then by simple optical system. Construction details: The optical comparator consists of the following parts such as Pivoted lever Objective lens Scale Plunger Table and Base, and
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Construction details : An electrical comparator consists of the following three major parts such as Transducer Display device as meter Amplifier Transducer : An iron armature is provided in between two coils held by a leaf spring at one end. The other end is supported against a plunger. The two a coils act as two
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Mechanical comparators are one form of linear measurement device which is quick and more convenient for checking large number of identical dimensions. Comparators normally will not show the actual dimensions of the work piece. They will be shown only the deviation in size, during the measurement, a comparator is able to give the deviation of
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In this type of stoker, the fuel and air move in the same direction. In this type of stokers, the air entering the holes in the grate comes in contact with the raw coal. Then the air is mixed with formed volatile matter and passed through the ignition and then entered into the region of
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In case of overfeed stokers, the coal is fed on the grate above the point of air admission. Working principle : In this type of fuel firing, the primary air enters the grate from the bottom. The air passing through the grate is heated by absorbing the heat from the ash and grates itself. So,
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When the plaintiff by his own want of care contributes to the damage caused by the negligence or wrongful conduct of the defendant, he is considered to be guilty of contributory negligence. An accident would be said to be the result of contributory negligence if “the proximate cause of the accident is the act or
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