Question: An SCR is sometimes called ____________?

• 1. Triac
• 2. Diac
• 3. Unijunction transistor
• 4. Thyristor

Question: An SCR is a solid state equivalent of ______________?

• 1. Triode
• 2. Pentode
• 3. Gas-filled triode
• 4. Tetrode

Question: An SCR has three terminals viz ________________?

• 1. Cathode, anode, gate
• 2. Anode, cathode, grid
• 3. Anode, cathode, drain
• 4. None of the above

Question: An SCR is made of_______________?

• 1. Germanium
• 2. Silicon
• 3. Carbon
• 4. None of the above

Question: An SCR has ___________semiconductor layers?

• 1. Two
• 2. Three
• 3. Four
• 4. None of the above

Question: An SCR has __________ pn junctions?

• 1. Two
• 2. Three
• 3. Four
• 4. None of the above

Question: An SCR is turned off when ________________?

• 1. Anode current is reduced to zero
• 2. Gate voltage is reduced to zero
• 3. Gate is reverse biased
• 4. None of the above

Question: If gate current is increased, then anode-cathode voltage at which SCR closes_________________?

• 1. Is decreased
• 2. Is increased
• 3. Remains the same
• 4. None of the above

Question: In an SCR circuit, the angle of conduction can be changed by__________________?

• 1. Changing anode voltage
• 2. Changing gate voltage
• 3. Reverse biasing the gate
• 4. None of the above

Question: When SCR is OFF, the current in the circuit is ________________?

• 1. Exactly zero
• 2. Small leakage current
• 3. Large leakage current
• 4. None of the above