01. Two de machines of the following rating are required: DC machine 1: 120 V, 1500 rpm, four poles
DC machine 2: 240 V, 1500 rpm, four poles
Coils are available which are rated at 4 volts and 5 amperes. For the same number
for both machines, determine the
(a) Type of armature winding for each machine.
(b) Number of coils required for each machine.

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

In what direction does an applied force move an object