B.Voc Mechatronics PCCoE

UNIT 1 : Water & Fuel and their Classification Easy notes Q1. Explain determination of hardness of water by EDTA method with respect to following points: principle , structure of metal EDTA complex. Principle : EDTA (Ethylenediaminetetraacetic acid) reacts with calcium (Ca^2+) and magnesium (Mg^2+) ions in water to form stable complexes. This reaction helps measure water hardness. Structure of Metal-EDTA Complex: EDTA acts like a claw, forming a strong bond with the metal ions (Ca^2+ or Mg^2+). The resulting complex is stable. [Procedure : (to make answer big for marks) 1. Water sample is titrated with EDTA solution. 2. The endpoint, marked by a color change using an indicator, shows when all calcium and magnesium ions are bound by EDTA. 3. The volume of EDTA used helps calculate the concentration of calcium and magnesium, indicating water hardness. ]     Q2) Define Priming and Foaming. Give causes, disadvantages and preventions of priming a...

 UNIT 2: Optics Electromagnetic wave nature of light Light is a transverse electromagnetic wave. This means that light is a wave that is made up of electric and magnetic fields. These fields are perpendicular to each other and to the direction of the wave's propagation       1. State law of reflection and Snell’s law of   refraction with diagram. law of reflection: the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. The angle of reflection is equal to the angle of incidence.  Snell’s law: 1. The incident ray, the refracted ray, and the normal at the point of intersection, all lie in the same plane. 2. The ratio of the sine of the angle of incidence (i) to the sine of the angle of refraction (r) is equal to the refractive index of the medium, which is a constant. sin i/sin r = μ         2. What is unpolarised light and plane polarised light? Unpolar...

 Below are easy to draw sketches, better picture quality images for UNIT 6 SEM I Exam Types of gears Fastener Categories Nut types Types of keys (a) Compression spring; (b) Tension spring; (c) Torsion spring; (d) Scroll spring ...

These are the top 3 questions with highest probability to come in SEM I Exam  

  UNIT 4 Vibrations &Ultrasonic waves 1.Define natural frequency and free vibrations The frequency with which a body vibrates freely at its own is called its natural frequency. Free vibrations can be defined as the vibrations in which the body vibrates with its own natural frequency when left free to itself. 2.Define forced vibrations and resonance The forced vibrations can be defined as the vibrations in which the body vibrates with a frequency other than its natural frequency under the action of an external periodic force. The phenomenon in which a body vibrates with its natural frequency under the influence of another vibrating body with the same frequency is called resonance. 3.what are ultrasonic waves? The sound waves having frequencies above the audible range i.e. above 20 kHz are called ultrasonic  waves. 4.Explain Magnetostriction effect When a ferromagnetic rod is kept in an alternating magnetic field the rod is set into longitudinal vibrations This happens due t...

Unit 5 SIGNAL CONDITIONING and DAQ SYSTEMS   1. Explain briefly Signal Conditioning.  Analog signals need to be correctly "prepared" before they can be converted into digital form for further processing.  Signal conditioning is an electronic circuit that manipulates a signal in a way that prepares it for the next stage of processing.  Many data acquisition (DAQ) applications involve environmental or mechanical measurements from sensors, such as temperature and vibration.  These sensors require signal conditioning before a data acquisition device can effectively and accurately measure the signal. For example, thermocouple signals have very small voltage levels that must be amplified before they can be digitized 2. What is Amplification? explain its types. A signal amplifier is a circuit that uses electrical power to increase the amplitude of an incoming signal voltage or current signal, and output this higher amplitude version at its output terminals. T...