Skip to main content

Featured Post

Induction Motor Interview Questions with Answers | Part-1

4 comments

VOLTMETER

How Voltmeter Works?




Voltmeter
How Voltmeter works?


  • Voltmeter is a basic meter to use for measure a electric potential difference in volts.

  • There are generally two types of voltmeter 

                   1. Analog voltmeter
                   2. Digital Voltmeter


  • In analog voltmeter, pointer is used across calibrated scale. Pointer is move around the scale according to potential difference.

  • Analog voltmeter is not shows perfect calibration as compare to digital voltmeter.

  • In digital voltmeter, analog to digital converter is used, so first it's convert analog to digital and digits are shown on display.

  • Digital voltmeter is shows the perfect calibration as compare to analog voltmeter.

  • When voltage to be measure, voltmeter must be connected in parallel.

  • Voltmeter has high value of resistance, so if we connected it in series, then resistance make be high and work as a open circuit and no current can flow, so meter does not display measurement.

  • If we connected voltmeter in parallel, so it's resistance make be smaller nearby zero and it displays the voltage across the load. And also we know that voltage must be same in parallel.

  • There are many different types of voltmeter are available in market according to capacity and according to company.

  • Also according to supply, there two types of voltmeter is available, 
  • DC Voltmeter
  • AC Voltmeter 

Digital Voltmeter

The image of digital Voltmeter is shown below:


Digital Voltmeter
Digital Voltmeter

Labels:

Comments

Post a Comment

Popular posts from this blog

Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino

Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino Introduction To Arduino Arduino is an Italian company that designs and manufactures Open Source Hardware (Microcontroller) and Open Source software or IDE (Integrated Development Environment). Arduino hardware is such a programmable computerized platform, by working on which the user can combine the hardware and software and prepare the electronic brain according to his own and can control the electronic devices from that electronic brain. What is arduino? If you want to understand more easily, then we can say that Arduino microcontroller is an empty brain, in which you can upload memory by coding or programming through arduino software, so these are called open source. Arduino works like a CPU of a board computer. Right now the microcontroller of the arduino of this time that we can take up is lik...
Post a Comment
Read more

Variable Inductance Transducer | Classification Of Variable Inductance Transducer

Variable Inductance Transducer | Classification Of Variable Inductance Transducer Variable Inductance Transducer | Classification Of Variable Inductance Transducer These are based on a change in the magnetic characteristic of an electrical circuit in response to a measurand which may be displacement, velocity, acceleration etc. Variable inductive transducer may be classified as follows: 1.Self-generating type In this type voltage is generated because of the relative motion between a conductor and a magnetic field. These may be further classified as follows: (A)Electromagnetic type (B)Electrodynamic type (C)Eddy current type 2.Passive type In this type the motion of an object results in change in the inductance of the coils of the transducer. These may be further classified as follows: (A)Variable reluctance (B)Mutual inductance (C)Differential transfer type 1.Self-generating Type (A)Eleotromagnetic t...
1 comment
Read more

Induction Motor Interview Questions with Answers | Part-1

Induction Motor Interview Questions with Answers | Part-1 Induction Motor Interview Questions with Answers | Part-1 Q.1 The frame of an induction motor is made of (A) aluminium (B) silicon steel (C) closed grained cast iron (D) stainless steel (E) bronze Answer:  (C) closed grained cast iron Q.2 The stator frame is an induction motor is used to (A) hold the armature stampings in position (B) ventilate the armature (C) protect the whole machine (D) provide return path for flux Answer:  (A) hold the armature stampings in position Q.3 The stator core of a 3 phase induction motor is laminate in order to reduce the (A) eddy current loss (B) hysteresis loss (C) both hysteresis and eddy current loss (D) weight of the stator (E) windage and friction losses Answer: (A) eddy current loss Q.4 An induction motor works with (A) dc only (B) ac only (C) ac and dc both (D) none of these Answer:  (B) ac only Q.5 Which of the following statement associated with polyphase induction motor is...
4 comments
Read more