955 Exam Solved Correctly

955 Exam Solved Correctly Coupling - Answer- Joins two shafts 1/4 the height away from a wall - Answer- A ladder If an overload torque limiter slips - Answer- It's operating properly EP grease is best used for - Answer- High temperature / Low speed Electricity is the - Answer- Flow of electrons Measuring unit of current - Answer- Ampere One BTU is = to the amount of heat required to - Answer- Raise or lower the temperature of one pound of liquid water 1 degree Fahrenheit Two types of boilers - Answer- Fire tube and water tube Solenoid component converts electrical energy to - Answer- Linear motion Caliber tool is used to - Answer- Measure shaft size An Allen wrench turns - Answer- Valves A tachometer measures - Answer- RPM Cold solder increases - Answer- Resistance The number 10 in SAE 10 oil refers to - Answer- Viscosity A plunger is part of a - Answer- Solenoid A box wrench is used when - Answer- No slippage can occur A torque limiter May limit the torque by - Answer- Slipping or uncoupling the load entirely A torque limiter protects mechanical equipment by - Answer- Mechanical overload Kinetic and potential energy are - Answer- Two types of energy Ball bearings have the least - Answer- Surface to surface, metal to metal contact exploiting the low viscosity of the layer of fluid Viscosity will go down - Answer- decrease with increase in temperature EP oil lubrication can be - Answer- Corrosive under certain conditions EP greases are used for - Answer- High temperatures, low speed operations due to high pressure or shock loading Rosin is commonly used in - Answer- Electronic and electronic soldering. Pipe fitting with threads on inside and outside is - Answer- A bushing Cavitations can - Answer- Damage a pump A faulty high Limit Switch can cause a - Answer- Pressure relief valve on a boiler to trip The speed that a RPM can safely run on a grinder - Answer- Depends upon the speed the wheel is rated forj Small bubbles that are formed in liquid and implode violently and create low head pressure - Answer- Cavitations Hydraulic pressure exiting the pump is greater than that fluid exiting the tank - Answer- Due to back flow prevention Advantages of brazing over welding are - Answer- Lower flame temperatures Flux removes - Answer- Oxides and prevents oxidation during brazing A series circuit - Answer- Has only one path to current to flow An amperage meter is used to - Answer- Measure current in a circuit On an ohm meter, a reading that stays on zero indicates - Answer- A shorted capacitor On an ohm meter, a reading that reads an infinite reading - Answer- Indicates the capacitor didn't charge Kinetic energy - Answer- the energy an object has due to its motion Potential energy - Answer- is stored energy When a device or wire is shorted - Answer- There will be high current and low resistance