MMET 401 - Exam 1 - Chapters 2-5 Review Questions and Answers Already Passed
_________ indicates the rate that work is done. - Answers Power
IF 225 kg of force is exerted on a hydraulic cylinder, it is equal to ________ lb of force. - Answers
495 lb
Pressure is typically measured in psi, bars, and ______ - Answers kPa
If a hydraulic cylinder needs to lift a bridge beam that weighs 60,000 lb and the piston in the
cylinder has a surface area of 113.10 sq in. then the hydraulic system must produce a pressure
of __ psi. - Answers 530.50
Most pump manufacturers recommend a vacuum rating less than or equal to __ in. Hg. -
Answers vacuum rating depends on pump design and manufacturer specifications
A ____ consists of a glass tube that is completely filled with mercury and closed on one end. -
Answers mercury barometer
_____________ energy is the energy of motion. - Answers kinetic
A common form of inefficiency in a fluid power system is __ - Answers leaks, resistance to
movement of mechanical devices, and resistance in pipes and hoses
____ is anything that changes or tends to change the state of rest or motion of a body. - Answers
Force
Fluid mechanics is comprised of static energy and _______ - Answers kinetic energy
Horsepower is a mechanical unit of measure equal to the force required to move 550 lb, ___ ft in
___ sec. - Answers 1,1
Energy from gears belts or pulleys is an example of __ energy. - Answers mechanical
The ___ pressure gauge is the most commonly used fluid power pressure gauge in industry. -
Answers Bourdon tube
___ pressure is the amount of pressure above the existing atmospheric pressure and is used to
measure pressure inside a closed fluid power system. - Answers Gauge
___ is the useful amount of output energy from a fluid power system compared to the amount of
input energy - Answers fluid power system efficiency
___ pressure is equal to the sum of gauge pressure and atmospheric pressure - Answers
absolute pressure
Pressure in a hydraulic system is the resistance to __ - Answers fluid flow
, A(n) __ pressure gauge has a tube that becomes straighter as pressure is increased. - Answers
Bourdon Tube Pressure Gauge
__ is used in a hydraulic system to allow fluid from the reservoir to travel into the pump. -
Answers vacuum
Schrader pressure gauges take measurements that are accurate to about +/- __ % - Answers
10%
Hydraulic pressure is created when fluid flow from a hydraulic pump meets ___ - Answers
resistance
___ pressure is created by the weight of the atmosphere at sea level under standard air
conditions. - Answers atmospheric pressure
Cylinders and motors in a fluid power system are considered __ - Answers actuators
___ is the amount of weight in pounds that a fluid power system must produce to move an
object - Answers exerted force
A(n) ___ pressure gauge converts fluid pressure into an electrical signal. - Answers digital
pressure gauge
__ must be overcome to perform work. - Answers resistance
__ is the number of unit squares equal to the surface of an object. - Answers Area
Digital pressure gauges are accurate from +-___% to ___%. - Answers 0.1% to 0.5%
Fluid power system energy transmission is based on efficiency, power, and __ - Answers work
___ is the force that stops, slows, or restricts the movement of fluid or devices in a fluid power
system. - Answers Resistance
___ is any pressure less than atmospheric pressure - Answers vacuum
_____ is the capacity to do work - Answers energy
A(n) ___ is used to measure atmospheric pressure using a column of mercury. - Answers
mercury barometer
__ energy involves the addition of heat to make a particle or molecule move faster. - Answers
thermal
__ states that when a force is applied to a confined fluid, the force is felt throughout the fluid
undiminished - Answers Pascal's Law
The amount of pressure required to move a cylinder with an attached load is the same for
_________ indicates the rate that work is done. - Answers Power
IF 225 kg of force is exerted on a hydraulic cylinder, it is equal to ________ lb of force. - Answers
495 lb
Pressure is typically measured in psi, bars, and ______ - Answers kPa
If a hydraulic cylinder needs to lift a bridge beam that weighs 60,000 lb and the piston in the
cylinder has a surface area of 113.10 sq in. then the hydraulic system must produce a pressure
of __ psi. - Answers 530.50
Most pump manufacturers recommend a vacuum rating less than or equal to __ in. Hg. -
Answers vacuum rating depends on pump design and manufacturer specifications
A ____ consists of a glass tube that is completely filled with mercury and closed on one end. -
Answers mercury barometer
_____________ energy is the energy of motion. - Answers kinetic
A common form of inefficiency in a fluid power system is __ - Answers leaks, resistance to
movement of mechanical devices, and resistance in pipes and hoses
____ is anything that changes or tends to change the state of rest or motion of a body. - Answers
Force
Fluid mechanics is comprised of static energy and _______ - Answers kinetic energy
Horsepower is a mechanical unit of measure equal to the force required to move 550 lb, ___ ft in
___ sec. - Answers 1,1
Energy from gears belts or pulleys is an example of __ energy. - Answers mechanical
The ___ pressure gauge is the most commonly used fluid power pressure gauge in industry. -
Answers Bourdon tube
___ pressure is the amount of pressure above the existing atmospheric pressure and is used to
measure pressure inside a closed fluid power system. - Answers Gauge
___ is the useful amount of output energy from a fluid power system compared to the amount of
input energy - Answers fluid power system efficiency
___ pressure is equal to the sum of gauge pressure and atmospheric pressure - Answers
absolute pressure
Pressure in a hydraulic system is the resistance to __ - Answers fluid flow
, A(n) __ pressure gauge has a tube that becomes straighter as pressure is increased. - Answers
Bourdon Tube Pressure Gauge
__ is used in a hydraulic system to allow fluid from the reservoir to travel into the pump. -
Answers vacuum
Schrader pressure gauges take measurements that are accurate to about +/- __ % - Answers
10%
Hydraulic pressure is created when fluid flow from a hydraulic pump meets ___ - Answers
resistance
___ pressure is created by the weight of the atmosphere at sea level under standard air
conditions. - Answers atmospheric pressure
Cylinders and motors in a fluid power system are considered __ - Answers actuators
___ is the amount of weight in pounds that a fluid power system must produce to move an
object - Answers exerted force
A(n) ___ pressure gauge converts fluid pressure into an electrical signal. - Answers digital
pressure gauge
__ must be overcome to perform work. - Answers resistance
__ is the number of unit squares equal to the surface of an object. - Answers Area
Digital pressure gauges are accurate from +-___% to ___%. - Answers 0.1% to 0.5%
Fluid power system energy transmission is based on efficiency, power, and __ - Answers work
___ is the force that stops, slows, or restricts the movement of fluid or devices in a fluid power
system. - Answers Resistance
___ is any pressure less than atmospheric pressure - Answers vacuum
_____ is the capacity to do work - Answers energy
A(n) ___ is used to measure atmospheric pressure using a column of mercury. - Answers
mercury barometer
__ energy involves the addition of heat to make a particle or molecule move faster. - Answers
thermal
__ states that when a force is applied to a confined fluid, the force is felt throughout the fluid
undiminished - Answers Pascal's Law
The amount of pressure required to move a cylinder with an attached load is the same for
