M4-Quiz_SCR

The following are an application of SCR except

• SCR as Screwball

• SCR for power control

• SCR as static contactor

• SCR for speed control of dc shunt motor

Silicon Controlled Rectifier is also known as the following except:

• Thyristor

• SCR Diode

• Transistor

• 4-layer-diode

When gate is open, what happens to the voltage?

• A lot of voltage flows through it

• No voltage is applied to the gate

• A small amount of voltage is applied to the gate

• A small amount of voltage flows through it

How many terminals does an SCR have?

• 2

• 4

• 3

• 5

As SCR has no moving parts, therefore when it is used as a switch, it is often called

• device

• static contractor

• static contactor

• controller

The anode terminal of SCR diode is connected to the first p-type material of a PNPN structure, cathode terminal is connected to the last n-type material, and gate terminal is connected to the second p-type material of a PNPN structure which is nearest to the

• anode

• cathode

• junction

• electrode

SCR combines the feature of a rectifier and a (______)

• diode

• thyristor

• resistor

• transistor

In this characteristic of SCR, the positive voltage is given to the anode, negative voltage is given to cathode, and gate is open circuited. Due to this, the junction (J1) and junction (J3) become

In this characteristic of SCR, the negative voltage is given to anode, positive voltage is given to cathode, and gate is open circuited. In this case, junction (J1) and junction (J3) are

When the switch is closed, the gate receives sufficient positive voltage to turn the SCR