Represent edges that cannot be seen

A 25 kVA transformer has an iron loss of 200 W and a full-load copper loss of 350 W. Calculate the transformer efficiency for the following load conditions: a. Full load at 0.8 power factor lagging b. 70% of full load at unity power factor c.

Describe the steps, tools, and technology needed in detail and explain how mass-producing this piece could increase efficiency and profit.

For a heat pump, COP<1. a) True b) False

For each of the following cases choose a suitable system, if possible, and describe its boundaries and surroundings. Indicate if the work done (Wk) is positive, negative, or zero, and heat transfer (Q), if any, positive, negative or zero.

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Write a function named is_prime that takes an integer argument and returns True if the number is prime and False otherwise.

Though still is on the margins of the global agro-food system, organic farming practices are on the rise in the core. In growing crops and raising livestock organically, which of the following are permitted? composted cow manure

Technician A says that a magnetic field can be created by current flow. Technician B says that current can be induced by moving a wire through a magnetic field. Who is right?

9.17 LAB: Name format Many documents use a specific format for a person's name. Write a program whose input is: firstName middleName lastName, and whose output is: lastName, firstName middleInitial.

16 Suppose that a steel of eutectoid composition is cooled to 550°C (1020°F) from 760°C (1400°F) in less than 0.5 s and held at this temperature.

The rotor in a shaded pole motor consists of A coils energized by alternating current B a short circuited loop of copper wire c a permanent magnet D an iron cylinder