EEE2 QUIZ

30問 • 2年前

問題一覧

is defined as the changes in terminal voltage expressed as a fraction of full load rated voltage when the load at a given power factor is removed while keeping the speed and field current constant

Voltage Regulation

the difference between the sending end and the receiving end voltages a line.

Voltage Drop

the nominal value assigned to a line or apparatus or a system of a given voltage class

Nominal Voltage

the voltage at which performance and operating characteristics of the apparatus are referred.

Rated Voltage

the voltage measured at the end of the service entrance apparatus

Service Voltage

the voltage measured at the end of the apparatus

Utilization Voltage

The reference Voltage

Base Voltage

The performance of distribution systems and quality of the service provided are measured in terms of freedom from interruptions and maintenance of satisfactory levels at the costumer’s premise that is within the limits appropriate for this type of service.

Voltage Quality and Standards

Automatic Voltage Regulation is always provided by:

Bus regulation at the Sub-Station. Individual Feeder Regulation in the substation. supplementary regulation along the main regulators mounted on poles

Feeders should not exceed the following

Above 33kV (-) 12.5% to (+)10% Up to 33kV Low Voltage

are used to protect equipment, machinery , components and devices, in electrical and electronic circuit, against short circuit, over current and earth fault

Protective Devices

It protects the current from overcurrent through its metal strip which is to liquefy the current when the flow is high.

Fuse

being more reliable and accurate and with the ability to detect other type of faults than overloads and overcurrent that can occur in networks and equipment

Protective Relays

The protective relay should operate positively and isolate the faulty portion of the power system as and when required. A reliable relaying system must be dependable and secure.

Reliability

Protection is arranged in zone, which should cover the power system completely, having no part unprotected

Selectivity

This term, applied to protection on distinct from power network, refers to the ability of the system to remain inert to all load conditions and fault external to the relevant zone.

Stability

The function of automatic protection is to isolate fault from the power system in a very much shorter time than could be isolated manually, even with great deal of supervision

Speed

a term frequently used when referring to the minimum operating limit of a complete protective system.

Sensitivity

Protective devices are selected and assigned to protect a specific part of the power system.

Zones of Protection

The overlapping of zones allows a protective device to provide backup protection to the adjacent zone, also referred to as the backup or overreached zone.

Primary and Backup Protection

permanently connected through a charger to the station AC service, and normally, during steady-state conditions, it floats on the charger.

Battery

Commonly known as the Instrument Transformer, current and potential transformer.

Transducer

A relay needs information from the system to make a decision.

Input

Many protection relays have adjustable __________. The user programs settings (pick-up levels) that allow the relay to make a decision

Settings

Once the inputs are connected and the settings are programmed, the relay compares these values and makes a decision.

Processes

The relay has several ways of communicating that a decision has been made.

Output

function as to detect the fault and also to initiate the appropriate control signal such as the tripping signal

Protective Relays

Relays this is a programmable relay whose the function is to initiate a sequence of actions leading to the automatic reclosing of the circuit breaker.

Reclosing and Synchronizing

Monitor power supplies (voltage, current, power, phase), temperatures, and other analogue signals and detects abnormalities in machines and equipment by determining values against alarm thresholds

Monitoring Relays

these relays which assist other relays by applying supplementary actions

Auxiliary Relays

EE14 MIDTERM REVIEWER

PJ ZERO · 42問 · 2年前

EE14 MIDTERM REVIEWER

42問 • 2年前

PJ ZERO

EE14 MIDTERM REVIEWER

PJ ZERO · 42問 · 2年前

EE14 MIDTERM REVIEWER

FME9 MIDTERM EXAM

FME9 MIDTERM EXAM

FME9 2

FME9 2

FLUIDS FINALS

FLUIDS FINALS

FLUIDS FINALS

FLUIDS FINALS

FLUIDS MIDTERM REVIEWER

PJ ZERO · 13問 · 1年前

FLUIDS MIDTERM REVIEWER

13問 • 1年前

PJ ZERO

問題一覧

is defined as the changes in terminal voltage expressed as a fraction of full load rated voltage when the load at a given power factor is removed while keeping the speed and field current constant

Voltage Regulation

the difference between the sending end and the receiving end voltages a line.

Voltage Drop

the nominal value assigned to a line or apparatus or a system of a given voltage class

Nominal Voltage

the voltage at which performance and operating characteristics of the apparatus are referred.

Rated Voltage

the voltage measured at the end of the service entrance apparatus

Service Voltage

the voltage measured at the end of the apparatus

Utilization Voltage

The reference Voltage

Base Voltage

Voltage Quality and Standards

Automatic Voltage Regulation is always provided by:

Bus regulation at the Sub-Station. Individual Feeder Regulation in the substation. supplementary regulation along the main regulators mounted on poles

Feeders should not exceed the following

Above 33kV (-) 12.5% to (+)10% Up to 33kV Low Voltage

are used to protect equipment, machinery , components and devices, in electrical and electronic circuit, against short circuit, over current and earth fault

Protective Devices

It protects the current from overcurrent through its metal strip which is to liquefy the current when the flow is high.

Fuse

being more reliable and accurate and with the ability to detect other type of faults than overloads and overcurrent that can occur in networks and equipment

Protective Relays

The protective relay should operate positively and isolate the faulty portion of the power system as and when required. A reliable relaying system must be dependable and secure.

Reliability

Protection is arranged in zone, which should cover the power system completely, having no part unprotected

Selectivity

This term, applied to protection on distinct from power network, refers to the ability of the system to remain inert to all load conditions and fault external to the relevant zone.

Stability

The function of automatic protection is to isolate fault from the power system in a very much shorter time than could be isolated manually, even with great deal of supervision

Speed

a term frequently used when referring to the minimum operating limit of a complete protective system.

Sensitivity

Protective devices are selected and assigned to protect a specific part of the power system.

Zones of Protection

The overlapping of zones allows a protective device to provide backup protection to the adjacent zone, also referred to as the backup or overreached zone.

Primary and Backup Protection

permanently connected through a charger to the station AC service, and normally, during steady-state conditions, it floats on the charger.

Battery

Commonly known as the Instrument Transformer, current and potential transformer.

Transducer

A relay needs information from the system to make a decision.

Input

Many protection relays have adjustable __________. The user programs settings (pick-up levels) that allow the relay to make a decision

Settings

Once the inputs are connected and the settings are programmed, the relay compares these values and makes a decision.

Processes

The relay has several ways of communicating that a decision has been made.

Output

function as to detect the fault and also to initiate the appropriate control signal such as the tripping signal

Protective Relays

Relays this is a programmable relay whose the function is to initiate a sequence of actions leading to the automatic reclosing of the circuit breaker.

Reclosing and Synchronizing

Monitor power supplies (voltage, current, power, phase), temperatures, and other analogue signals and detects abnormalities in machines and equipment by determining values against alarm thresholds

Monitoring Relays

these relays which assist other relays by applying supplementary actions

Auxiliary Relays