Question: An SCR is a ____________ triggered device?

• 1. Voltage
• 2. Current
• 3. Voltage as well as current
• 4. None of the above

Question: An SCR is made of silicon and not germanium because silicon _________________?

• 1. Is inexpensive
• 2. Is mechanically strong
• 3. Has small leakage current
• 4. Is tetravalent

Question: In an SCR circuit the supply voltage is generally ___________ that of breakover voltage?

• 1. Equal to
• 2. Less than
• 3. Greater than
• 4. None of the above

Question: The normal way to turn on a SCR is by______________?

• 1. Breakover voltage
• 2. Appropriate anode current
• 3. Appropriate gate current
• 4. None of the above

Question: An SCR combines the features of ____________?

• 1. A rectifier and resistance
• 2. A rectifier and transistor
• 3. A rectifier and capacitor
• 4. None of the above

Question: An SCR is turned off by _________________?

• 1. Reducing anode voltage to zero
• 2. Reducing gate voltage to zero
• 3. Reverse biasing the gate
• 4. None of the above

Question: The control element of an SCR is ______________?

• 1. Cathode
• 2. Anode
• 3. Anode supply
• 4. Gate

Question: In the normal operation of an SCR, anode is __________ w.r.t. cathode?

• 1. At zero potential
• 2. Negative
• 3. Positive
• 4. None of the above

Question: An SCR behaves as a____________switch?

• 1. Unidirectional
• 2. Bidirectional
• 3. Mechanical
• 4. None of the above

Question: In normal operation of an SCR, gate is _____________w.r.t. cathode?

• 1. Positive
• 2. Negative
• 3. At zero potential
• 4. None of the above