List three things to consider before installing a rack or chassis.
What will be an ideal response?
Before installing a rack or chassis, consideration must be given to the following:
temperature
dust
vibration
humidity
field wiring distances
troubleshooting accessibility
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When operating a vehicle with a dual air brake system the driver's should
A. Let the vehicle warm up before driving to ensure that the fuel reaches the engine. B. Let the air compressor build up a minimum of 100 psi pressure in the primary and secondary systems before driving. C. Begin driving just after the vehicle starts.
America's attempt to remain neutral in the war between the Axis powers and the Allies came to an end when
A. Japan attacked Pearl Harbor. B. Germany attacked Poland. C. the conscription law was passed in 1940. D. France fell to Germany. E. Italy "stabbed France in the back."
A 220 V, dc series motor has an armature current of 86 A, armature resistance of 0.2 ?, and a field resistance of 0.1 ?. The terminal voltage of the motor can be adjusted by means of solid-state devices. Ignore the field saturation.
a. When the motor runs at 600 rpm, the armature current is 20 A. A 0.1 ? resistance is added in shunt to the field windings. If the load torque remains constant, calculate the speed of the motor. b. The resistance in shunt of the field windings is removed. The motor is used to lower the same mechanical torque described in (a) by a countercurrent braking method. The desired speed in the countercurrent braking is 10 rpm. The braking current is twice the rated value. Calculate the armature voltage of the motor.
The amperage draw of an electric fuel pump is higher than specified. All of the following are possible causes EXCEPT ________
A) Defective fuel pump B) Restriction in the fuel line C) Clogged fuel filter D) Corroded electrical connections at the pump motor