Term
|
Definition
| A mechanical power transmission system receives power from. |
|
|
Term
| Allow two shafts to be disconnected while running. |
|
Definition
| The purpose of having a clutch connecting two shafts together is to |
|
|
Term
| The groove in a shaft for a key is called a ______________? |
|
Definition
|
|
Term
| A woodruff key has a _______________? |
|
Definition
|
|
Term
| The nominal height of a key is the height of the key-stock without accounting for_____________? |
|
Definition
|
|
Term
| The best instrument to use when measuring the inside width of a key-seat or the depth of the key-seat is a_____________? |
|
Definition
|
|
Term
| _____________ set screws are used for permanent mounting of components on shafts.The point bites into the shaft to create a high axial and torsional locking strength. |
|
Definition
|
|
Term
| When assembling a key in a shaft key-seat, the key____________________? |
|
Definition
| should fit into the key-seat without forcing it. |
|
|
Term
| The best way to remove a hub from a shaft is to________________? |
|
Definition
|
|
Term
| Two common methods used to load a mechanical drive system are using a dynamo meter, or a __________________? |
|
Definition
|
|
Term
| The power output at a motors shaft if found by ____________________? |
|
Definition
| multiplying the torque times the shaft speed |
|
|
Term
| A motor shaft producing 4 ft-lb torque at 1313 RPM has __________________Hp? |
|
Definition
| Use the formula: P out= TxS/5252 1 |
|
|
Term
| A ____________ ammeter is opened and placed around the wire to measure the current, which is convenient because the user does not have to disconnect the circuit. |
|
Definition
|
|
Term
| Mechanical Power Efficiency is defined as _____________? |
|
Definition
| the ratio of the Power out to the Power in |
|
|
Term
| As the torque on an electric motor increases, ______________? |
|
Definition
|
|
Term
| The function of a machine shaft is to __________________. |
|
Definition
| transmit mechanical power from one location to another |
|
|
Term
| A common material used in machine shafts is____________________ |
|
Definition
|
|
Term
| Chrome plated steel shafts should be used ________________. |
|
Definition
| to resist rusting or corrosion |
|
|
Term
| The accuracy stock diameter of a shaft is ______ the nominal diameter. |
|
Definition
|
|
Term
| The three types of loads placed of bearing are __________________ |
|
Definition
| radial, thrust, and combination |
|
|
Term
| Without bearings to hold a shaft in place, loads would cause _______________ |
|
Definition
all the above excessive wear/
the shaft to move out of place
the machine to fail |
|
|
Term
| All electric motors require ______ bearings mounted _____to the motor |
|
Definition
|
|
Term
| The two major categories of bearings used in industry are |
|
Definition
|
|
Term
| Both major categories of shaft bearings can be mounted in one of which tow ways? |
|
Definition
|
|
Term
| The coupling provides a secure method of transmitting____________ from one shaft to another. |
|
Definition
|
|
Term
| The flange coupling is classified as which type of mechanical coupling? |
|
Definition
|
|
Term
| The advantage of the flexible jaw coupling is ________________. |
|
Definition
|
|
Term
| The tow major types of misalignment corrected by shaft alignment are____________ |
|
Definition
|
|
Term
| The procedure of aligning two shafts is to check and correct ___________and __________misalignment in two planes; vertical and horizontal. |
|
Definition
|
|
Term
| When aligning tow shafts, the reason to rotate the coupling hubs before making each measurement is so each measurement is ____________ |
|
Definition
| taken from the place on the hub each time |
|
|
Term
| Pulley Ratio is defined as the ratio of ___________ |
|
Definition
| pitch diameter of the driven pulley to the pitch diameter of the drive pulley |
|
|
Term
| The pitch circle of a belt drive is _____________. |
|
Definition
| the place in the belt which represents the center of the force that is being transmitted by the belt. |
|
|
Term
| The three basic components for a belt drive system are ____________. |
|
Definition
| v-belt, driver sheave, and driven sheave |
|
|
Term
| In a belt drive system, as the pulley ratio increases, shaft speed on the driven pulley will ___________ and shaft torque will _______________. |
|
Definition
|
|
Term
| One important characteristic of a timing belt is that it _________________. |
|
Definition
| will not slip during operation |
|
|
Term
| A Fractional Horsepower (FHP) V-Belt is used for _____________. |
|
Definition
| low power, intermittent operation |
|
|
Term
| In the process of installing a chain drive system, the motor and driven component should be checked for a soft foot condition and excessive run-out. The shaft run-out should be no more than ________________. |
|
Definition
|
|
Term
| A used belt requires _________ belt deflection force that a new belt. |
|
Definition
|
|
Term
| Pitch is defined as the distance between a point and a similar corresponding point. Examples of pitch are__________________. |
|
Definition
|
|
Term
| The maximum allowable deflection force on a belt is ______________ than the minimum deflection force. |
|
Definition
|
|
Term
| Belt span is defined as the _______________. |
|
Definition
| distance between the points on the sheaves where the belt touches each sheave. |
|
|
Term
| A V-belt should ride _________ in the groove with its top near the top of the sheave, and does not touch the _________of the sheave. |
|
Definition
|
|
Term
| The most basic way to test the tension of a belt is to use |
|
Definition
|
|
Term
| the three basic components of a chain drive are ___________. |
|
Definition
| chain, driver sprocket, and driven sprocket |
|
|
Term
| In a chain drive system, the speed and torque of the driven shaft are determined by the _______________. |
|
Definition
| relative number of teeth between the driven sprocket and the driver sprocket |
|
|
Term
| The sprocket ratio for a chain drive system having a driven sprocket with 54 teeth and a driver sprocket with 18 teeth is ______________ |
|
Definition
|
|
Term
| In a chain drive system, the speed of the driven shaft will decrease as the ____increases. |
|
Definition
|
|
Term
| In a chain drive systme, the _________on the driven shaft will increase as the sprocket ratio (SR) increases. |
|
Definition
|
|
Term
| A chain drive system has a driver sprocket with 24 teeth and a driven sprocket with 72 teeth. If the driver shaft speed id 600 RPM, the driven shaft speed will be _____________. |
|
Definition
|
|
Term
| The most common type of chain used for mechanical drive is a ________. |
|
Definition
|
|
Term
| A chain should be replaced when its length become __________ longer that the original length |
|
Definition
|
|
Term
| Multiple strand chains are used __________. |
|
Definition
| to transmit a great deal of power |
|
|
Term
| Compared to a v-belt drive, a chain drive ________________. |
|
Definition
|
|
Term
| Chain sag is measured by rotating the sprockets so there is little or no chain sag in the __________ side and measuring the dag in the ___________ side |
|
Definition
|
|
Term
|
Definition
| midway between the sprockets |
|
|
Term
| to install a chain, in some applications ______________. |
|
Definition
|
|
Term
| A chain puller is a tool used to hold two ends of a chain together while the _____________. |
|
Definition
|
|
Term
| When using a chain puller, the jaws are opened and closed by _______________. |
|
Definition
| A dial on top of the tool |
|
|
