Read and download CBSE Class 12 Engineering Pulleys in NCERT book for Class 12 Other Subjects. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Other Subjects textbook for Class 12 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 12 Other Subjects to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 12 Other Subjects Pulleys
Class 12 Other Subjects students should refer to the following NCERT Book Pulleys in Class 12. This NCERT Book for Class 12 Other Subjects will be very useful for exams and help you to score good marks
Pulleys NCERT Book Class 12
PULLEYS
7.1 INTRODUCTION
In every machine or toy, we use power to operate and perform its function. This power is obtained mostly by the motor, run on electricity or battery. To transfer the power from the motor to the operational part of the machine, we use a combination of pulleys and belt (flexible connector). Pulleys are used in very small sizes to be fitted in wrist watches and tape recorders, as well as quite big in size as in ships.
The pulley used, with the motor shaft is called driver and with machine shaft is called driven. The size of driver and driven pulleys define the ratio of speed transferred as reduced or increased. Ifboth the driver and driven pulley are of same diameter then the speed of the shaft / spindle will be same, if driver is of small diameter with respect to driven then the speed will be reduced at operating shaft and vice versa.
PULLEYS
Outer cylindrical surface of the pulley used to hold the belt is called RIM, while the inner cylindrical part to be mounted on the shaft is called HUB. The RIM and the HUB are joined together with solid web or spokes or splines depending upon the sizeof the pulley. In the pulleys of diameter up to 200 mm a solid web is provided. The pulley is attached to the shaft either by the key or by a set screw of the suitable size and type.
The driver pulley and driven pulley are connected with different type of endless belts i.e. Flat Belt, Rope Belt, V-Belt etc. The material of the belt must be strong in tension yet flexible and relatively light in weight i.e. canvas, leather, rubber and so on.
Pulley - drive is very easy to install and require minimum maintenance. The power is transmitted from one shaft to another by means of friction between the belt and the rim. The losses in power transmission are negligible in V-belt pulley rather than flat-belt pulley. However power transmission capacity reaches its limit when the belt starts toslip.
Now we understand that pulleys allow us to
1. Lift loads up, down and sideways.
2. Rotate things at different speeds.
PULLEYS
So pulley is a simple machine used in our day to day life to complete the work with less efforts. In this class we will study Flat Belt and V-Belt pulleys, upto 200 mm diameter in detail. The rim of the flat belt pulley is not flat it is slightly convex and this is known as the crowning. Actually the rotating belt around the pulley
Please refer to the link below for - CBSE Class 12 Engineering Pulleys
Other Subjects NCERT Book Class 12 Pulleys
The above NCERT Books for Class 12 Other Subjects Pulleys have been published by NCERT for latest academic session. The textbook by NCERT for Pulleys Other Subjects Class 12 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Pulleys NCERT etextbooks as the exams for Class 12 Other Subjects are always asked as per the syllabus defined in these ebooks. These Class 12 Pulleys book for Other Subjects also includes collection of question. We have also provided NCERT solutions for Class 12 Other Subjects which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 12 students.
NCERT Book Class 12 Other Subjects Pulleys
The latest NCERT book for Pulleys pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 12 Other Subjects Pulleys are designed to enhance the overall understanding of students. All Class 12 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 12 students.
Pulleys NCERT Book Class 12 Other Subjects
As the students of Class 12 need the books for their regular studies, we have provided all NCERT book for Pulleys in pdf here for free download. All pdf NCERT books available here for Class 12 will help them to read on their mobile or computers. They can take a print of the Class 12 Other Subjects NCERT Book Pulleys pdf easily and use them for studies. The NCERT textbooks for Class 12 Other Subjects have been provided chapter-wise and can be downloaded for free of cost.
Class 12 Other Subjects Pulleys NCERT Book
Along with Other Subjects Class 12 NCERT Book in Pdf for Pulleys we have provided all NCERT Books in English Medium for Class 12 which will be really helpful for students who have opted for english language as a medium. Class 12 students will need their books in English so we have provided them here for all subjects in Class 12.
Class 12 Pulleys NCERT Book Other Subjects
For Class 12 Pulleys we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 12 Other Subjects Pulleys book in easy to read pdf format. These books will help Class 12 Other Subjects students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 12 Other Subjects Pulleys textbook issued by NCERT then you have come to the correct website
You can download the NCERT Book for Class 12 Other Subjects Pulleys for latest session from StudiesToday.com
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Yes, the NCERT Book issued for Class 12 Other Subjects Pulleys have been made available here for latest academic session
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