MSSC MAINTENANCE AWARENESS WITH 100% CORRECT ANSWERS.

When connecting a 3-phase motor the three lines (T1,T2 and T3) are usually connected to __________. - L1, L2, and L3 Electricians use __________ to prevent damage to electrical wiring running to the machine. - rigid and flexible conduit When the wire or foil strip inside a fuse melts, the fuse is said to be __________. - blown The difference between a fuse and a circuit breaker is __________. - circuit breakers can be reset and used again The amount two electrical waveforms are out of phase is measured in __________. - degrees The type of overload protection that protects the motor by disconnecting it physically instead of electrically is a(n) __________. - overload clutch Which of the following is an advantage of a circuit breaker over a fuse? - Can be reset *T or F The minimum number of sets of contacts a motor starter has depends on the number of power leads the motor requires. - True When current in a circuit is too high, it is usually the result of too many loads or a __________. - short circuit The measure of energy consumed by a circuit is called __________. - power For a single-phase AC motor, only __________ motor wires connect to the power lines. - 2 A technician has removed a piece of equipment from a disconnect, but the breaker still trips. The next step is to check the wiring to the disconnect and __________. - test the breaker again The Ohm's Law formula for calculating voltage is __________. - E = I × R When something binds or jams in rotating machinery, the machinery is protected by a(n) __________. - overload clutch If a motor has an excessive load, what event is most likely to occur? - Blow a fuse or trip a thermal overload The total power in __________ electrical circuit is calculated by finding the sum of the individual component power consumption. - any Electrical wiring that runs in exposed locations must be protected by pipe or tubing called __________. - conduit 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. - sum Hydraulics deals with the transmission and control of energy by a pressurized? Liquid Which of the following is not considered one of the five basic components of a hydraulic system? Pressure Which of the following is not considered part of the power unit? Actuator Which of the following is not shown in a hydraulic schematic? Liquid When drawing a hydraulic schematic, one rule to remember is to always draw the components? In a de-energized state Another name for a cylinder would be an? Actuator A double-acting cylinder will extend when oil flows into the? Cap end A directional control valve is used to? Change the direction of the fluid The spool of a directional control valve is shifted to different positions by the? Operator Most hydraulic motors are modified designs of? Pumps The hydraulic motor converts hydraulic flow into? Rotary shaft speed Which of the following is NOT a type of a hydraulic piston motor? Spring loaded _____ are used to remove undissolved contaminates in hydraulic fluid. Filters Placing a filter in this location allows the filter to be cleaned without shutting down the machine? Off-line _____ prevents large particles from damaging the pump and is placed in the reservoir. Strainer A _____ filter is designed to handle the full pressure of the hydraulic system. It uses a replaceable cartridge and is enclosed in a metal casing called a bowl. Pressure line filter The _____ filter, commonly used on suction or return lines, is similar in appearance to a pressure line filter but cannot withstand the full pressure of the hydraulic system. Cartridge type filter The _____ filter, used for low pressure applications, has a removable cartridge that can be cleaned or replaced. Spin-on _____ are rated by the size of contaminates they remove. Hydraulic filters The amount of dirt collected by a filter when the pressure reaches a predetermined point is called the? The Dirt holding capacity A _____ can show when DHC of a filter has been reached. Bypass indicator In a mechanical trasmission system an electric motor is also called a Prime Mover The three types of shaft to adjacent shaft power transmission are Chain Drive, Gear Drive, and Belt Drive Companies typically require that ______ as part of their shop safety rules Safety glasses be worn Some rules for safe dress to wear around machinery when it is running are Wear high fitting clothing and heavy duty shoes To protect your eyes in production areas, _____ is/are required OSHA Safety Glasses In addition to dress rules another rule you should follow with machinery is Do not work on wet floors In a lockout/tagout system, each person _____ the machine being locked out Places his own lock on The proper place to lock out an electrical control system is at the Disconnect switch To _____ workers should always interrupt the power at the motor disconnect Perform lockout/tagout Which agency suggests that a worker inspect and test all equipment, assuming all to be energized until proven deenergized OSHA