問題一覧
1
is a device which is designed to interrupt the current flow in a circuit.
Switch
2
are physical switches, which must be activated physically, by moving, pressing, releasing, or touching its contacts.
Mechanical Switches
3
do not require any physical contact in order to control a circuit. These are activated by semiconductor action
Electronic Switches
4
This is the basic ON and OF switch consisting of one input contact and
one output contact.
SPST
5
This switch has three terminals is input contact and remaining two are output contacts.
In most of the circuits, these switches are used as changeover to connect the input between two choices of outputs.
SPDT
6
This switch consists of four terming
Two input contacts and two output contacts.
This type of switches is used for controlling two different circuits at a time.
Also, the contacts of this switch may be either normally open or normally closed configurations.
DPST
7
This is a dual ON/OFF switch consisting of two ON positions.
It has six terminals, two are input contact is and remaining four are the output contacts.
DPDT
8
It is a momentary contact switch that
Takes or breaks connection as long as pressure is applied (or when the button is pusned)
Push Button Switch
9
is manually actur
(or pushed up or down) by a mechanical handle,lever or rocking mechanism. These are commonly used as light control switches.
Toggle Switch
10
The control schemes of a (blank) (blank)
are shown in above figure, in which four
varieties of (blank) (blank) are press
Some switches are operated by the presence of an object or by the absence of objects or by the motion of machine instead of human hand operation.
Limit Switch
11
are mainly used controlling DC and AC motor pumps according to the liquid or water in a tank or sump This switch is operated when the float (or floating object) moves downward or upward based on water level in a tank.
Float Switches
12
These switches are commonly usen
industnal applications in order to sense the
pressure of hydraulic systems and automatic devices.
Pressure Switches
13
are manually actuated control devices used mainly in portable control equipment.
Joystick Switch
14
These are used for connecting one line to one of many lines.
Rotary Switches
15
A transistor either allows the current to pass or it blocks the current as similar to working of normal switch.
Bipolar Transistors
16
It is most commonly used switching device is power electronic applications.
MOSFET
17
one of the most widely used high speed
switching device for power control a,
Stations.
Silicon Controlled Rectifier
18
switch is a vidirectional switching device, which is an equivalent circuit of two back to back SCRs connection with one gate terminal.
TRIAC
19
it consists of two terminals, which are not named as anode and cathode as it is a bidirectional device i.e., a DIAC can be operated in either direction regardless of the terminal identification.
DIAC
20
are switches that open and close circuits electromechanically or electronically.
Relays
21
pic
Electromechanical Relays
22
Heavy-duty frame that contains and supports the parts of the relay.
Frame
23
Wire is wound around a metal core. The coil of wire causes an electromagnetic field.
Coil
24
A relays moving part. The armature opens and closes the contacts. An attached spring returns the armature to its original position.
Armature
25
The conducting part of the switch that makes (closes) or breaks (opens) a circuit.
Contacts
26
.
Automotive Relays
27
b
Battery Contactor
28
consist of an input circuit, a control circuit, and an output circuit. The input circuit is the portion of a relays frame to which the control component is connected.
Solid State Relays
29
are electromechanical switches that are usually operated by a magnetic coil. They operate with AC or DC current, at common voltages such as 12V, 24V, 48V, 120V, and 230V and can control currents ranging from 2A-30A.
General Purpose Relays
30
are a small, compact, fast operating switch design with one contact, normally open (NO), and metically sealed in a glass envelope, which makes the contacts unaffected by contaminants, fumes, or humidity.
Reed Relays
31
are also operated by a magnetic coil. They are heavy-duty and are used to control starters and other industrial emponents.
Machine Control Relays
32
turn on the load when the control (minimum operating) voltage is applied, and the voltage of the load is close to zero.
Zero Switching Relays
33
turn on the load immediately when the pickup voltage is present, and they allow i load to be turned on at any point in its up and down wave.
Instant On Relays
34
turn on the load when the control voltage is present, and the voltage of the Ioad is at its peak.
Peak Switching Relays
35
have an infinite number of possible output voltages within the relays rated range. They hale a built-in synchronizing circuit that controls the amount of output voltage as a function of the input voltage.
Analog Switching Relays
36
is a type of electromagnet, the purpose of which is to generate/controlled magnetic field through a coil wound into a tightly packed helix.
Solenoids
37
types of solenoids
Solenoid Lock
38
types of solenoid
Solenoid Valve
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情報
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230問 • 8日前問題一覧
1
is a device which is designed to interrupt the current flow in a circuit.
Switch
2
are physical switches, which must be activated physically, by moving, pressing, releasing, or touching its contacts.
Mechanical Switches
3
do not require any physical contact in order to control a circuit. These are activated by semiconductor action
Electronic Switches
4
This is the basic ON and OF switch consisting of one input contact and
one output contact.
SPST
5
This switch has three terminals is input contact and remaining two are output contacts.
In most of the circuits, these switches are used as changeover to connect the input between two choices of outputs.
SPDT
6
This switch consists of four terming
Two input contacts and two output contacts.
This type of switches is used for controlling two different circuits at a time.
Also, the contacts of this switch may be either normally open or normally closed configurations.
DPST
7
This is a dual ON/OFF switch consisting of two ON positions.
It has six terminals, two are input contact is and remaining four are the output contacts.
DPDT
8
It is a momentary contact switch that
Takes or breaks connection as long as pressure is applied (or when the button is pusned)
Push Button Switch
9
is manually actur
(or pushed up or down) by a mechanical handle,lever or rocking mechanism. These are commonly used as light control switches.
Toggle Switch
10
The control schemes of a (blank) (blank)
are shown in above figure, in which four
varieties of (blank) (blank) are press
Some switches are operated by the presence of an object or by the absence of objects or by the motion of machine instead of human hand operation.
Limit Switch
11
are mainly used controlling DC and AC motor pumps according to the liquid or water in a tank or sump This switch is operated when the float (or floating object) moves downward or upward based on water level in a tank.
Float Switches
12
These switches are commonly usen
industnal applications in order to sense the
pressure of hydraulic systems and automatic devices.
Pressure Switches
13
are manually actuated control devices used mainly in portable control equipment.
Joystick Switch
14
These are used for connecting one line to one of many lines.
Rotary Switches
15
A transistor either allows the current to pass or it blocks the current as similar to working of normal switch.
Bipolar Transistors
16
It is most commonly used switching device is power electronic applications.
MOSFET
17
one of the most widely used high speed
switching device for power control a,
Stations.
Silicon Controlled Rectifier
18
switch is a vidirectional switching device, which is an equivalent circuit of two back to back SCRs connection with one gate terminal.
TRIAC
19
it consists of two terminals, which are not named as anode and cathode as it is a bidirectional device i.e., a DIAC can be operated in either direction regardless of the terminal identification.
DIAC
20
are switches that open and close circuits electromechanically or electronically.
Relays
21
pic
Electromechanical Relays
22
Heavy-duty frame that contains and supports the parts of the relay.
Frame
23
Wire is wound around a metal core. The coil of wire causes an electromagnetic field.
Coil
24
A relays moving part. The armature opens and closes the contacts. An attached spring returns the armature to its original position.
Armature
25
The conducting part of the switch that makes (closes) or breaks (opens) a circuit.
Contacts
26
.
Automotive Relays
27
b
Battery Contactor
28
consist of an input circuit, a control circuit, and an output circuit. The input circuit is the portion of a relays frame to which the control component is connected.
Solid State Relays
29
are electromechanical switches that are usually operated by a magnetic coil. They operate with AC or DC current, at common voltages such as 12V, 24V, 48V, 120V, and 230V and can control currents ranging from 2A-30A.
General Purpose Relays
30
are a small, compact, fast operating switch design with one contact, normally open (NO), and metically sealed in a glass envelope, which makes the contacts unaffected by contaminants, fumes, or humidity.
Reed Relays
31
are also operated by a magnetic coil. They are heavy-duty and are used to control starters and other industrial emponents.
Machine Control Relays
32
turn on the load when the control (minimum operating) voltage is applied, and the voltage of the load is close to zero.
Zero Switching Relays
33
turn on the load immediately when the pickup voltage is present, and they allow i load to be turned on at any point in its up and down wave.
Instant On Relays
34
turn on the load when the control voltage is present, and the voltage of the Ioad is at its peak.
Peak Switching Relays
35
have an infinite number of possible output voltages within the relays rated range. They hale a built-in synchronizing circuit that controls the amount of output voltage as a function of the input voltage.
Analog Switching Relays
36
is a type of electromagnet, the purpose of which is to generate/controlled magnetic field through a coil wound into a tightly packed helix.
Solenoids
37
types of solenoids
Solenoid Lock
38
types of solenoid
Solenoid Valve