Technical

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Q. In a parallel circuit with a diode, what is the effect of reverse bias on the diode?
  • A. It conducts current
  • B. It blocks current
  • C. It increases voltage
  • D. It decreases resistance
Q. In a parallel circuit with three resistors, if one resistor fails open, what happens to the circuit?
  • A. The circuit stops working
  • B. The total resistance increases
  • C. The total current decreases
  • D. The other resistors continue to function
Q. In a parallel circuit, how does the power dissipated by each resistor relate to the total power?
  • A. Total power is the sum of individual powers
  • B. Total power is the product of individual powers
  • C. Total power is the average of individual powers
  • D. Total power is the maximum of individual powers
Q. In a parallel circuit, if one branch fails open, what happens to the other branches?
  • A. They stop working
  • B. They continue to operate normally
  • C. They short-circuit
  • D. They increase in voltage
Q. In a parallel circuit, if one resistor fails open, what happens to the other resistors?
  • A. They stop working
  • B. They continue to operate normally
  • C. They short circuit
  • D. They increase in resistance
Q. In a parallel circuit, the power consumed by each component is:
  • A. The same
  • B. Different
  • C. Dependent on the voltage
  • D. Dependent on the current
Q. In a parallel circuit, the voltage across each component is:
  • A. The same
  • B. Different
  • C. Dependent on the current
  • D. Dependent on the resistance
Q. In a parallel circuit, what is the voltage across each component?
  • A. The same as the total voltage
  • B. Different for each component
  • C. Zero volts
  • D. The average of all voltages
Q. In a peak detector circuit using an op-amp, what component is crucial for storing the peak voltage?
  • A. Resistor
  • B. Capacitor
  • C. Inductor
  • D. Diode
Q. In a PLD, what does the term 'logic array' refer to?
  • A. A collection of resistors
  • B. A matrix of programmable connections
  • C. A type of diode configuration
  • D. A series of capacitors
Q. In a PLD, what is the role of the logic array?
  • A. To store data
  • B. To perform arithmetic operations
  • C. To implement logic functions
  • D. To amplify signals
Q. In a precision rectifier circuit, what is the main advantage over a standard diode rectifier?
  • A. Higher efficiency
  • B. Lower forward voltage drop
  • C. Ability to rectify small signals accurately
  • D. Faster switching speed
Q. In a rectifier circuit, what happens to the output voltage when the input AC voltage is at its peak?
  • A. Output voltage is zero
  • B. Output voltage is equal to the peak input voltage
  • C. Output voltage is half the peak input voltage
  • D. Output voltage is negative
Q. In a rectifier circuit, what is the purpose of a filter capacitor?
  • A. To increase the output voltage
  • B. To smooth out the rectified output
  • C. To decrease the current flow
  • D. To convert AC to DC
Q. In a relational database, what does a foreign key do?
  • A. Links two tables together
  • B. Ensures data integrity
  • C. Acts as a primary key in another table
  • D. All of the above
Q. In a relational database, what does a foreign key represent?
  • A. A unique identifier for a table
  • B. A reference to a primary key in another table
  • C. An attribute of an entity
  • D. A constraint on data types
Q. In a relational database, what is a foreign key?
  • A. A unique identifier for a record
  • B. A key that links two tables together
  • C. A key that is not indexed
  • D. A key used for data encryption
Q. In a relational database, what is the purpose of a foreign key?
  • A. To uniquely identify a record
  • B. To establish a relationship between two tables
  • C. To enforce data integrity
  • D. To improve query performance
Q. In a ring counter, how many states does it have if it has 4 flip-flops?
  • A. 4
  • B. 8
  • C. 16
  • D. 2
Q. In a Schmitt trigger circuit, what is the effect of hysteresis?
  • A. It increases the gain
  • B. It stabilizes the output against noise
  • C. It reduces the input impedance
  • D. It allows for faster switching
Q. In a serial-in parallel-out shift register, how is data entered?
  • A. All at once
  • B. One bit at a time
  • C. In groups of four
  • D. In reverse order
Q. In a series circuit with a BJT, what happens to the collector current when the base current increases?
  • A. It decreases
  • B. It remains the same
  • C. It increases
  • D. It becomes zero
Q. In a series circuit with an operational amplifier, what is the role of feedback?
  • A. To increase the input impedance
  • B. To stabilize the gain
  • C. To decrease the output voltage
  • D. To isolate the input from the output
Q. In a series circuit with capacitors, how is the total capacitance calculated?
  • A. It is the sum of all capacitances
  • B. It is the product of all capacitances
  • C. It is the reciprocal of the sum of the reciprocals
  • D. It is the maximum capacitance
Q. In a series circuit, what happens to the voltage across each component if the total voltage is constant and the resistance of one component increases?
  • A. Voltage across all components increases
  • B. Voltage across all components decreases
  • C. Voltage across the increased resistance increases
  • D. Voltage across the increased resistance decreases
Q. In a series circuit, what is the effect of adding more resistors on the total resistance?
  • A. Total resistance decreases
  • B. Total resistance increases
  • C. Total resistance remains the same
  • D. Total resistance becomes zero
Q. In a series circuit, what is the effect of increasing the total resistance on the current flow?
  • A. Current increases
  • B. Current decreases
  • C. Current remains the same
  • D. Current becomes zero
Q. In a series circuit, what is the total voltage across multiple diodes?
  • A. It is the sum of the individual diode voltages
  • B. It is the average of the diode voltages
  • C. It is the maximum diode voltage
  • D. It is zero
Q. In a series RL circuit, what happens to the current when the voltage is suddenly applied?
  • A. It instantly reaches maximum value
  • B. It increases linearly
  • C. It increases exponentially
  • D. It remains constant
Q. In a series RL circuit, what is the phase relationship between voltage and current?
  • A. Voltage leads current by 90 degrees
  • B. Current leads voltage by 90 degrees
  • C. Voltage and current are in phase
  • D. Voltage lags current
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