CORRECT ANSWERS.
3 Phase, Full Wave - CORRECT ANSWER✅✅Rectified power supply with the least
amount of ripple
10 A Jack - CORRECT ANSWER✅✅Jack for red lead in digital multimeter for current
measurements
12.5 feet - CORRECT ANSWER✅✅Car movement based on synchronous selector
ratio of 30 to 1 and selector moving 5 inches
13.3 feet - CORRECT ANSWER✅✅Car movement based on synchronous selector
ratio of 40 to 1 and selector moving 4 inches
160 VDC - CORRECT ANSWER✅✅Output of rectifier with 120 VAC input
240 VDC (185vac x 1.33 = 240vdc) - CORRECT ANSWER✅✅Three phase, full-wave
rectifier output with 185 vac input
277 VDC (208vac x 1.33 = 277vdc) - CORRECT ANSWER✅✅Three phase, full-wave
rectifier output with 208 vac input
AC Brake - CORRECT ANSWER✅✅Type of hoist motor brake used
Between 2X and 3X - CORRECT ANSWER✅✅Circuit opened if cam protection timer
times out
BPR Resistor - CORRECT ANSWER✅✅Component providing a discharge path for the
induced current of the brake coil
capacitor c1 would not charge properly - CORRECT ANSWER✅✅Effect of contact A 1-
2 failing to close
Capacitor c1 would not discharge properly - CORRECT ANSWER✅✅Effect of R2
opening in the circuit
capital a with straight line and 3 dots underneath it. - CORRECT ANSWER✅✅DC
current measurement on a digital multimeter
, Capital V with 3 dots and straight line on top - CORRECT ANSWER✅✅DC voltage
measurement on a digital multimeter
Condition of relays 2F1-3 when the car is traveling up between the second and third
floors. - CORRECT ANSWER✅✅Self Holding
Delays relay dropping until C1 discharges - CORRECT ANSWER✅✅Timing circuit
around coil of A function
Digital multimeter - CORRECT ANSWER✅✅Tool to check for an open fuse in a
controller
Eliminate noise transfer to building supply - CORRECT ANSWER✅✅Isolation
transformer purpose
Generator series field - CORRECT ANSWER✅✅Compounding adjustments in variable
voltage control system
Generator shunt field - CORRECT ANSWER✅✅Control of generator output in variable
voltage control system
How can you reduce contact arcing on plug-in relay contacts? - CORRECT
ANSWER✅✅wire two contacts of the same relay in series
How much dc voltage will a single phase, full-wave rectifier with 134 VAC input
produce? - CORRECT ANSWER✅✅120 (134 vac x .9 = 120vdc)
How much dc voltage will a single phase, full-wave rectifier with 240 VAC input
produce? - CORRECT ANSWER✅✅216 (240 vac x .9 = 216vdc)
In a properly grounded elevator system, which of the following should be grounded? -
CORRECT ANSWER✅✅All of the above
In use lights - CORRECT ANSWER✅✅Effect of contact OD 2/8 failing to close
Loop circuit - CORRECT ANSWER✅✅Circuit feeding increased voltage to hoist motor
armature
Maintaining a relay in an energized state with its own contact - CORRECT
ANSWER✅✅Self holding contact purpose
Mechanically - CORRECT ANSWER✅✅Method to hold up set/reset relays after the set
coil is de-energized