Exercise 2: Motor Start/Stop The figure below shows the control diagram of a motor starter. Draw its ladder diagram program. OL T1 L1 L2 L3 M M M Stop OL. T2 OL T3 Start Motor Hint: There are 3 input contacts (I1 for start, 12 for stop and 13 for Overload) Draw the rung/s here (Maximum of 2 rungs). V OL

14.a. Jogging a motor is accomplished byA. manually turning its shaft.B. reducing its armature current.C. momentarily energizing the starter.D. blocking the motor from rotating.14.b. How does change in resistance affect the speed of a DC motor?A. Increasing the armature resistance decreases the motor's speed.B. Reducing the field resistance increases the motor's speed.C. Increasing the field resistance decreases the motor's speed.D. Reducing the armature resistance decreases the motor's speed.

Assume all of the timers are set for a 3 second delay. When the start button is pressed, nothing happens. None of the motors start. Which of the following could NOT cause this problem. a   Overload contact OL1 is open b   1CR relay coil is open c   2CR relay coil is open d   The stop button is open

Complete the wiring diagrams as per Worksheets 5-A and 5-B then solve for "A" through "G" for the DC motor on Worksheets 5-A and 5-B when it is running at capacity and its specifications are as follows:Rated input = 125 volts, 16 ampsArmature Resistance = 0.3 ohms(Ω)Shunt Field Resistance = 50 ohms (Ω)Series Field Resistance = 0.6 ohm (Ω)Rheostat Resistance = 12.5 ohm (Ω)A) Voltage drop of armature (IR-arm)a) 4.05 V b) 120.95 V c) 125 V d) 129.5 VB) Voltage generated by motor (E-cemf)a) 4.05 V b) 120.95 V c) 125 V d) 129.5 VC) power consumed by shynt field(p-shunt)a) 54.68 W, b) 312.5 W, c) 1632.83 W, d) 2000 WD) power consumend by armature resistance( P-arm)a) 54.68 W , b) 312.5 W, c) 1632.83 W , d) 3000 W

At its normal operating speed, an electric fan motor draws only 10.8% of the current it draws when it just begins to turn the fan blade. The fan is plugged into a 120.0-V socket. What back emf does the motor generate at its normal operating speed? i

in figure 43-11 when the start button is pushed and the motorstarts in the forward direction, the plugging switch closes. What prevents the reversing contactor from energizing when the  plugging switch closes

Please help with answering this question, please write clearly, thanks.    If the motor is operating at full load and if its variable resistance Radj is adjusted to 250 ohms, what is the new speed of the motor?(assume no armature reaction).

A 220 V shunt motor driving its normal load draws an armature current of 50 A from a 220 V dc source. The armature resistance of this motor including brushes is 0.25 ohms. How much armature current (minimum) Will this motor draw from a 200 V DC source when driving the same load with the field adjusted to maintain the same speed.