NEIEP Mechanics Exam
1 inch is the same as _____ cm, or ANS-2.54 cm. 1" is equal to ______mm - ANS-25.4 mm
Equation for the output voltage of a three-phase full wave rectifier: ANS-1.33x the input voltage
Area of a circle - ANS-A=πr²
Average Value Formula if given peak - ANS-.636 x peak
Formula for Circumference: ANS-C = 2 r Dumbwaiter Max cab height - ANS-4'
Effective Value (RMS) formula if given peak - ANS-0.707 x peak value
Equation to find inductive reactance - ANS-2piefL
Formula for 2 unequal resistances in parallel - ANS-R1xr2/r1+r2
formula for frequency - ANS-f=1/T where T is time(period) in seconds
Formula for resistance in series parallel circuit - ANS-Add the resistor in series to the total
resistance of resistors in parallel
Formula for unequal resistances in a parallel circuit - ANS-R= 1/
1/r1+ 1/r2.........
Frequency (Hz) formula - ANS-Frequency= RPMx N(number of poles/ 120)
High voltage motor wiring 9 lead - ANS-L1-T1, L2-T2, L3-T3
T7-T4, T8-T5, T9-T6
Hydraulic LULA Overspeed valve Tripping speed - ANS-110%-140%
Roped Hydro LULA is required to have safeties and a governor also
Low voltage motor connection 9 lead - ANS-L1 T1-T7, L2 T2-T8, L3 T3-T9
T4,T5,T6 wire nutted together
Lula door type - ANS-Horizontal slide, accordion and bi fold
LULA Max Capacity - ANS-1400 Lbs.
LULA Max Platform Area - ANS-18 sq ft
LULA Max Rise - ANS-25 ft.
LULA Max Speed - ANS-30 ft. Min
Lula Permanent Mechanical holding device Measurement - ANS-35"-79" above pit floors. 24"
minimum above bottom sill
Lula traction rope size and aircraft cable size - ANS-30x diameter for traction
21x diameter for aircraft cable
Max clearance between dumbwaiter cab and hoistway enclosure - ANS-No less than 1/2"
Max door height Dumbwaiter - ANS-54"
Max gap leading edges of center opening doors - ANS-1/2"
Max platform size of dumbwaiter - ANS-9 square ft.
Minimum six for escape hatch - ANS-40 square inches
Overlap minimum for horizontal sliding doors - ANS-5/8"
peak to peak value - ANS-2x peak value
Peak to peak value when given RMS or effective - ANS-Peak to Peak= 2.828x RMS
Peak value if given average - ANS-Peak= AVG/0.636 OR
Peak= AVG x 1.57
1 inch is the same as _____ cm, or ANS-2.54 cm. 1" is equal to ______mm - ANS-25.4 mm
Equation for the output voltage of a three-phase full wave rectifier: ANS-1.33x the input voltage
Area of a circle - ANS-A=πr²
Average Value Formula if given peak - ANS-.636 x peak
Formula for Circumference: ANS-C = 2 r Dumbwaiter Max cab height - ANS-4'
Effective Value (RMS) formula if given peak - ANS-0.707 x peak value
Equation to find inductive reactance - ANS-2piefL
Formula for 2 unequal resistances in parallel - ANS-R1xr2/r1+r2
formula for frequency - ANS-f=1/T where T is time(period) in seconds
Formula for resistance in series parallel circuit - ANS-Add the resistor in series to the total
resistance of resistors in parallel
Formula for unequal resistances in a parallel circuit - ANS-R= 1/
1/r1+ 1/r2.........
Frequency (Hz) formula - ANS-Frequency= RPMx N(number of poles/ 120)
High voltage motor wiring 9 lead - ANS-L1-T1, L2-T2, L3-T3
T7-T4, T8-T5, T9-T6
Hydraulic LULA Overspeed valve Tripping speed - ANS-110%-140%
Roped Hydro LULA is required to have safeties and a governor also
Low voltage motor connection 9 lead - ANS-L1 T1-T7, L2 T2-T8, L3 T3-T9
T4,T5,T6 wire nutted together
Lula door type - ANS-Horizontal slide, accordion and bi fold
LULA Max Capacity - ANS-1400 Lbs.
LULA Max Platform Area - ANS-18 sq ft
LULA Max Rise - ANS-25 ft.
LULA Max Speed - ANS-30 ft. Min
Lula Permanent Mechanical holding device Measurement - ANS-35"-79" above pit floors. 24"
minimum above bottom sill
Lula traction rope size and aircraft cable size - ANS-30x diameter for traction
21x diameter for aircraft cable
Max clearance between dumbwaiter cab and hoistway enclosure - ANS-No less than 1/2"
Max door height Dumbwaiter - ANS-54"
Max gap leading edges of center opening doors - ANS-1/2"
Max platform size of dumbwaiter - ANS-9 square ft.
Minimum six for escape hatch - ANS-40 square inches
Overlap minimum for horizontal sliding doors - ANS-5/8"
peak to peak value - ANS-2x peak value
Peak to peak value when given RMS or effective - ANS-Peak to Peak= 2.828x RMS
Peak value if given average - ANS-Peak= AVG/0.636 OR
Peak= AVG x 1.57
