The starter must never operate for more than sixty seconds at a time and should rest for two minutes between extended cranking ? True or false

25. Which of the following is/are a general method of starting squirrel-cage motors'? a) full voltage starting b) reduced voltage starting c) both "a" and "b" d) neither "a" nor "b"

There is something wrong in this motor control circuit. When the start button is pressed, the contactor energizes but the motor itself does not run: Fuse Fuse Fuse 1 2 3 Contactor 1 2 ...To control circuit Schematic diagram Fuses 1 2 3 ли 12 3 Motor motor 3 2 1 Shaft Identify a good place to check with your multimeter to diagnose the nature of the fault, and explain your reasoning

What would be the ground fault/ short circuit protection using an inverse time circuit breaker for 240 volt 5 hp motor with 75 temperature? a. 40amps b. 50 amps c. 60 amps d. 70 amps

A 480 volt 3-phase motor draws 375 amps of inrush current when started across the line and produces 250 % of normal full load torque. The starting current is 800% of the FLA rating of the motor. If using an autotransformer starter, determine the line inrush amps and motor amps for the 50%, 65% and 80% taps. (answer to 3 significant figures without units) 80% Tap I Inrush = Amps I Line = Amps 65% Tap I Inrush = Amps I Line = Amps 50% Tap I Inrush = Amps %3D I Line = Amps

A 300 HP, 208-Volt, 3 – phase motor is started by the Y – Δ method. If the starting current is 54 A, when rated voltage is applied, what current will flow when the Y – Δ switch is used?   (A)30 A  (B) 31.2 A  (C) 32.4  (D) 33.7