MSSC - Maintenance Awareness Exam Questions With Correct Answers

Torches are designed to avoid mixing oxygen and acetylene by using __________. - Answer Reverse-flow check valves at torch inlets or regulator outlets To prevent leakage around the valve during use, __________ - Answer An oxygen cylinder valve should be opened all the way An explosion can occur if __________ comes in contact with oil. - Answer High pressure oxygen A green welding hose normally indicates that this hose carries __________. - Answer Oxygen A __________ is a non-destructive test that uses a colored spray to reveal imperfections in a weld. - Answer dye-penetrant test A red welding hose indicates that this hose carries __________. - Answer acetylene When using the __________ in welding, the electrode should be leaned 15 to 25 degrees in the direction of travel. - Answer pull technique __________ metal is a metal similar in composition to the metal being joined. It strengthens the weld by filling the gap created between the two pieces of metal during welding. - Answer Filler Metals treated by __________ processes become soft. - Answer annealing Oxy-acetylene welding requires no __________ and is not sensitive to wind or drafts like Gas Metallic Arc Welding or Gas Tungsten Arc Welding. - Answer electricity A magnaflux test is used to show what flaw in ferrous metal? - Answer Cracks in the surface A spot welding system consists of an electrical supply, moveable arm, and a(n) __________. - Answer stationary arm What device should be stored a minimum of 20 feet from flammable materials? - Answer Oxygen Cylinders The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it with the base metal being welded. - Answer Electricity Circuit testers determine if __________ electricity is present. - Answer AC A knife switch consists of a lever and one or more sets of __________. - Answer contacts The component of an electrical circuit that gives the operator control is the __________. - Answer input device The type of current that only flows in one direction is __________. - Answer DC Constant voltage power supplies will maintain a constant voltage under varying __________. - Answer loads 10mA would be an example of __________ value. - Answer current A(n) __________ is used to measure resistance. - Answer ohmmeter Voltage is a(an) electrical __________. - Answer force If a wire has continuity, it__________. - Answer will have almost no resistance Current in a __________ circuit is divided among the branches of the circuit. - Answer parallel As branches are added to a parallel circuit the resistance __________. - Answer decreases A multimeter is a multipurpose device that can measure _________. - Answer voltage, current, and resistance In a parallel circuit with a constant voltage power supply, the voltage drop across each branch is __________. - Answer equal to the power supply voltage A(n) __________ circuit is one in which there is more than one path for current to travel. - Answer parallel An ammeter is used to measure __________. - Answer current The two ways to measure voltage are __________ and __________. - Answer across a component, from a reference Both analog and digital voltmeters measure __________. - Answer potential difference When current in a circuit is too high, it is usually the result of too many loads or a __________. - Answer short circuit Electrical wiring that runs in exposed locations must be protected by pipe or tubing called __________. - Answer conduit The total power in __________ electrical circuit is calculated by finding the sum of the individual component power consumption. - Answer any The amount two electrical waveforms are out of phase is measured in __________. - Answer degrees The Ohm's Law formula for calculating voltage is __________. - Answer E=I(current)*R(resistance) What is the power formula? - Answer P = I(current)*E(voltage) The type of overload protection that protects the motor by disconnecting it physically instead of electrically is a(n) __________. - Answer overload clutch The measure of energy consumed by a circuit is called __________. - Answer power The power is connected to a single phase motor using __________ lines. - Answer 2 Kirchoff's Voltage Law for a series circuit shows that the total voltage dropped in a series circuit is equal to the __________ of the individual voltage drops. - Answer sum The difference between a fuse and a circuit breaker is __________. - Answer circuit breakers can be reset and used again When something binds or jams in machinery, the machinery is protected by a(n) __________. - Answer overload clutch Which is considered a fluid system, pneumatics or hydraulics? - Answer both The S.I. unit for pressure is __________. - Answer kPa DCV stands for __________. - Answer directional control valve The 3-position, 5-way DCV is held in the mid-position by the __________. - Answer springs What are the two types of conductors used in a pneumatic system? - Answer supply line and actuator line The poppet of a pressure regulator is opened by the __________. - Answer adjustment spring Smaller dirt particles are removed from the air by the filter's __________. - Answer element The 3-way DCV spool is held in the energized position by the __________. - Answer operator The __________ filter, used for low pressure applications, has a removable cartridge that can be cleaned or replaced. - Answer spin-on Placing a filter in this location allows the filter to be cleaned without shutting down the machine. - Answer off-line A double-acting cylinder will extend when oil flows into the __________. - Answer cap end What is not considered one of the five basic components of a hydraulic system? - Answer pressure The hydraulic motor converts hydraulic flow into __________. - Answer rotary shaft speed When drawing a hydraulic schematic, one rule to remember is to always draw the components __________. - Answer in a de-energized state __________ prevents large particles from damaging the pump and is placed in the reservoir. - Answer Strainer Another name for a cylinder would be a(n) __________. - Answer actuator