Submitted by Maria Xuyein B.... on Fri, 03/14/2014 - 05:51
Basic Information:
Nickname: Yhen
Age: 23
Brithday: Mrach 11, 1991
Birth Place: Quezon City
Address: Taytay Rizal
Facebook: Niehy11
Submitted by Reviewer Team on Thu, 03/13/2014 - 18:24
The University of the Philippines College Admission Test, commonly known as UPCAT, is part of the admission requirements of the University of the Philippines, administered to graduates of Philippine and foreign high schools. For this exam, this Free E-Learning UPCAT Biology & Chemistry Reviewer was drafted.
This automated fun quiz game/reviewer is not an official product of DepEd, CHED, or any institution. This is just to help you review for the examinations. Goodluck!
This technological reviewer was made by:
Zamira Parreno
Marie Esquillo
Margie Casenillo
Abigail Robeso
Glen Lampano
Submitted by Reviewer Team on Thu, 03/13/2014 - 17:44
UPCAT is part of the admission requirements of the University of the Philippines for the aspiring students who wish to study in the said university. For this examination, this Free E-LEARNING UPCAT ENGLISH Reviewer was primarily made.
This reviewer covers the following topics--parts of speech, general grammar rules, syntax and mechanics, diction and vocabulary, and reading comprehension.
This fun quiz game/reviewer was made by the following persons:
Aguda, Abby Joy F.
Sagadal, Milca M.
Garduque, Querstine Michaille B.
Morales, Jayvee
To have an access to this e-learning reviewer, you just have to click the Facebook LIKE button above (if you have not liked it yet).
Submitted by Rebecca M. Nunesca on Wed, 03/12/2014 - 05:16
EXECUTIVE INSIGHT
Submitted by Rebecca M. Nunesca on Mon, 03/10/2014 - 01:58
Basic Information
Permanent Address:
Brgy. Padre Castillo, San Pascual, Batangas
Contact Information:
Email Address: rmn.rebecca1975@gmail.com
Submitted by Rebecca M. Nunesca on Mon, 03/10/2014 - 01:16
Part 1: Promoting Employee's Health and Safety
Part 2: Human Resource Planning
Part 3: Career Management and Development
Submitted by Annabelle S. Pomar on Sat, 03/08/2014 - 13:11
BASIC INFORMATION
NAME: Annabelle S. Pomar
NICK NAME: Belle, Abel, Anna
Submitted by Rey Pascual Ongoco on Fri, 03/07/2014 - 13:15
ELECTRIC MOTOR
Part 3
March 11, 2014
• Motor Protection
• Protecting an electric motor basically involves preventing the motor from getting too hot.
•
• Every 10C above the maximum recommended temperature of the insulation can reduce its working life by half.
• The best way to protect a motor against overheating is to directly monitor the temperature of the motor windings.
• If the temperature exceeds the maximum set value for the motor its contactor is tripped to allow the motor to stop and cool down.
Submitted by Rey Pascual Ongoco on Fri, 03/07/2014 - 12:56
ELECTRIC MOTOR
PART 2
March 10, 2014
• Induction Motor – Basic Operation
• When 3-Φ supply is connected to the stator winding the currents which flow in the windings produce a multi-pole magnetic field.
• This field rotates at a speed called synchronous speed.
f = P x N/120
N – synchronous speed, rpm
P – no. of magnetic poles
f – supply frequency, Hz
• Example: What is the synchronous speed of a 6-pole motor supplied at 60Hz?
• Answer: 1200 rpm
The rotating magnetic field cuts through the rotor conductors and induces emf’s in them.
Submitted by Rey Pascual Ongoco on Fri, 03/07/2014 - 12:46
Electric Motors
PART1
March 7, 2014
• The drive power for compressor, pumps and fans aboard ship comes from electric motor.
• The most common type of motor is the 3-Φ, cage-rotor induction motor. It is simple, tough and requires very little attention.
• Another advantage is in starting and stopping these motors that can be done with simple, reliable direct-on-line contactor starters.
• Induction motors are usually supplied at 440V, 60Hz, but 3.3 kV, 60Hz is sometimes used for large drives such as bow thrusters and cargo pumps.
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