Mechanics Exam NEIEP 2026 Questions and Answers
(Verified Answers by Expert)
1" is equal to cm - ANSWER 2.54 cm
1" is equal to mm - ANSWER 25.4 mm
Circumference Formula - ANSWER C = 2πr
Area of a circle - ANSWER A=πr²
Pressure formula - ANSWER Pressure = Force/Area or P = F/A
RPM formula - ANSWER 60 x F /( N/2) where F(frequency is Hz) N is the number of
poles
Example: what is the rotating speed of a three phase 30 HZ 6 pole motor?
60 x 30hz = 1800 1800 •/• 3 poles = 600RPM
Time constant formula in resistive capacitive circuit - ANSWER T = RC where T is
time in sec. R is Resistance and C is Capacitance which is probably is in microfarads
Time constant formula in a resistive inductive circuit - ANSWER T=L/R Where T is
time in seconds, L is inductance in henries and R is reaistance
formula for frequency - ANSWER f=1/T where T is time(period) in seconds
Effective Value (RMS) formula if given peak - ANSWER 0.707 x peak value
Average Value Formula if given peak - ANSWER .636 x peak
Peak value if given average - ANSWER Peak= AVG/0.636 OR
Peak= AVG x 1.57
peak to peak value - ANSWER 2x peak value
Peak value when given effective or RMS - ANSWER Peak= 1.414 x Effective or
RMS
Peak to peak value when given RMS or effective - ANSWER Peak to Peak= 2.828x
RMS
Formula for unequal resistances in a parallel circuit - ANSWER R= 1/
1/r1+ 1/r2.........
(Verified Answers by Expert)
1" is equal to cm - ANSWER 2.54 cm
1" is equal to mm - ANSWER 25.4 mm
Circumference Formula - ANSWER C = 2πr
Area of a circle - ANSWER A=πr²
Pressure formula - ANSWER Pressure = Force/Area or P = F/A
RPM formula - ANSWER 60 x F /( N/2) where F(frequency is Hz) N is the number of
poles
Example: what is the rotating speed of a three phase 30 HZ 6 pole motor?
60 x 30hz = 1800 1800 •/• 3 poles = 600RPM
Time constant formula in resistive capacitive circuit - ANSWER T = RC where T is
time in sec. R is Resistance and C is Capacitance which is probably is in microfarads
Time constant formula in a resistive inductive circuit - ANSWER T=L/R Where T is
time in seconds, L is inductance in henries and R is reaistance
formula for frequency - ANSWER f=1/T where T is time(period) in seconds
Effective Value (RMS) formula if given peak - ANSWER 0.707 x peak value
Average Value Formula if given peak - ANSWER .636 x peak
Peak value if given average - ANSWER Peak= AVG/0.636 OR
Peak= AVG x 1.57
peak to peak value - ANSWER 2x peak value
Peak value when given effective or RMS - ANSWER Peak= 1.414 x Effective or
RMS
Peak to peak value when given RMS or effective - ANSWER Peak to Peak= 2.828x
RMS
Formula for unequal resistances in a parallel circuit - ANSWER R= 1/
1/r1+ 1/r2.........
