Electric Motors Controls BOMA Pre-Quiz Latest Version Graded A+

Electric Motors Controls BOMA Pre-Quiz Latest Version Graded A+ How does a U.P.S. (Uninterruptible power supply) work? AC rectified to DC batteries then Inverted to AC Batteries energy capacity is measured in? Amp-hours Batteries have two rated values. Voltage and amp-hours How do you top off water in a battery cell? Distilled water when the level is below the plate. A voltage monitor relay is used for? Starting backup generators. Fuel for diesel generators is often stored in a? Day tank _____ converts between electrical and mechanical power. Motor, Generator, alternator. The field winding on a generator: Produces the magnetic field. The stationary members of a generator is called a Stator A motor Converts electrical energy into mechanical energy. an armature is The movable portion of a contractor. In a process control, delay is: The time it takes for a change in the process to be felt. What is the difference between a contactor and a starter? A starter has overload protection How is a holding circuit wired? Stop push buttons I series, Start push buttons in parallel, Using a holding contact. What protects circuits from short circuits? Breakers Soft-starts work by? Lowering voltage during start up When a starter has a built in disconnect, we call it a? Combination starter Normally closed means? There is continuity when the component is on the shelf What is an example of a P.E. Switch? Pressure operated electric switch. The input and output power of a transformer is rated in? KVA A soft start is used to? Reduce starting current AC motor speed is determined by? The number of poles. DC arcs. Are the most difficult to extinguish. Arc chutes. Help confine the arcs. The lower the NEMA rating on a contactor The