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The GITS ME/EC exam has 100 questions and runs 4 hours.
These 10 free GITS ME/EC questions are organized by exam domain, so you can see how each part of the GITS Master Electrician and Electrical Contractor Examination blueprint is tested. Reveal the answer and explanation under each question.
During commissioning of a three-wire magnetic starter, the contactor pulls in and the motor reaches speed while the START pushbutton is held. The contactor drops out the instant START is released. The STOP and overload contacts have continuity, and rated voltage is present at the coil while START is held. What fault best matches these findings?
Correct answer: C - The normally open seal-in auxiliary contact is open or miswired
A clamp ammeter reads 42 A when placed around one phase conductor of a running three-phase motor. When the jaw encloses all three phase conductors together, it reads 0.3 A. How should the readings be interpreted?
Correct answer: A - The 42 A reading is phase current; 0.3 A is the residual imbalance after the phase currents largely cancel
At a 120/208 V, three-phase, four-wire wye panel, a technician measures 120 V from each phase to neutral and approximately 208 V phase to phase. An apprentice claims the transformer should be retapped because phase-to-phase voltage ought to be 240 V. What is the best response?
Correct answer: D - The readings are normal; in a wye system line voltage is approximately 1.732 times phase voltage
A 480Y/277 V panelboard has exposed live parts at the front. The opposite boundary of the working space is an uninsulated concrete wall. Under the 2017 NEC, what minimum clear working-space depth is required?
Correct answer: B - 3.5 ft
A feeder supplies 32 A of continuous load and 18 A of noncontinuous load. The assembly is not listed for 100% operation, and all conditions for using the next standard overcurrent-device size are satisfied. Which pair gives the minimum calculated conductor ampacity and the corresponding minimum standard overcurrent-device rating?
Correct answer: A - 58 A conductor ampacity; 60 A overcurrent device
Under the 2017 NEC, a 120 V, 20 A dwelling branch circuit supplies a receptacle serving a kitchen countertop. Which protection applies to that circuit and receptacle?
Correct answer: C - Both AFCI and GFCI protection
A single driven rod electrode measures 38 ohms to earth. A second permitted rod is installed 8 ft away. Under the 2017 NEC rod-electrode rule, what must be done next?
Correct answer: D - No additional rod or resistance test is required by this rule after the supplemental electrode is installed
Six 8 AWG copper THHN conductors, all current-carrying, share a raceway in a 40°C ambient. The 90°C table ampacity is 55 A, the six-conductor adjustment factor is 80%, the 40°C correction factor is 0.91, and the terminals are rated 75°C with a 50 A limit. What ampacity may be used before overcurrent-device selection?
Correct answer: B - Approximately 40 A
Under the 2017 NEC, a box contains five 12 AWG insulated conductors that enter or leave the box, two 12 AWG equipment grounding conductors, one internal cable clamp, one receptacle yoke connected to 12 AWG conductors, and one 12 AWG pigtail that begins and ends entirely inside the box. Using 2.25 in³ per 12 AWG allowance, what minimum box volume is required?
Correct answer: D - 20.25 in³
A specification calls for conductors marked only 'THHN' to be installed in PVC raceway buried between two buildings. The designer argues that solvent-welded conduit keeps the conductors dry. What revision is necessary?
Correct answer: A - Use conductors identified for wet locations, such as THWN-2, because an underground raceway is a wet location
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