Technical

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Q. In a combinational circuit, what is the primary function of multiplexers?
  • A. To perform arithmetic operations
  • B. To select one of many inputs
  • C. To store data
  • D. To invert signals
Q. In a combinational logic circuit, what is the primary function of multiplexers?
  • A. To perform arithmetic operations
  • B. To select one of many inputs
  • C. To store data
  • D. To invert signals
Q. In a common emitter BJT configuration, what is the phase relationship between the input and output signals?
  • A. In phase
  • B. Out of phase
  • C. No phase relationship
  • D. Dependent on frequency
Q. In a common-emitter BJT configuration, what is the phase relationship between input and output?
  • A. In phase
  • B. Out of phase
  • C. No phase relationship
  • D. Dependent on frequency
Q. In a common-source FET amplifier configuration, what is the phase relationship between the input and output signals?
  • A. In phase
  • B. Out of phase
  • C. No phase relationship
  • D. Dependent on frequency
Q. In a comparator circuit, what happens when the non-inverting input voltage exceeds the inverting input voltage?
  • A. The output goes low
  • B. The output goes high
  • C. The output remains unchanged
  • D. The output oscillates
Q. In a database, what does a 'foreign key' do?
  • A. Links two tables together
  • B. Identifies a unique record
  • C. Stores large amounts of data
  • D. Indexes a table for faster access
Q. In a database, what does ACID stand for?
  • A. Atomicity, Consistency, Isolation, Durability
  • B. Atomicity, Concurrency, Integrity, Durability
  • C. Atomicity, Consistency, Isolation, Data integrity
  • D. Atomicity, Consistency, Isolation, Distribution
Q. In a DBMS architecture, what does the term 'data independence' refer to?
  • A. The ability to change the data structure without affecting the application
  • B. The ability to access data from multiple sources
  • C. The ability to store data in different formats
  • D. The ability to secure data from unauthorized access
Q. In a differential amplifier configuration, what does the operational amplifier amplify?
  • A. The average of the input signals
  • B. The difference between the input signals
  • C. The sum of the input signals
  • D. The square of the input signals
Q. In a differential amplifier configuration, what is the output voltage proportional to?
  • A. The difference between two input voltages
  • B. The sum of two input voltages
  • C. The average of two input voltages
  • D. The product of two input voltages
Q. In a differential amplifier, what is the significance of the resistor values?
  • A. They determine the input impedance
  • B. They set the common-mode gain
  • C. They affect the differential gain
  • D. They stabilize the output voltage
Q. In a discrete-time signal, what does the term 'aliasing' refer to?
  • A. Loss of signal strength
  • B. Distortion of the signal due to insufficient sampling
  • C. The process of filtering a signal
  • D. The conversion of a signal from analog to digital
Q. In a distributed database, what is the purpose of data replication?
  • A. To ensure data consistency across all nodes
  • B. To reduce the size of the database
  • C. To increase the complexity of the system
  • D. To eliminate the need for backups
Q. In a FET, what does the gate voltage control?
  • A. The drain current
  • B. The source voltage
  • C. The gate current
  • D. The output power
Q. In a first-order RC circuit, what happens to the voltage across the capacitor after 5 time constants?
  • A. It is at 100% of V0
  • B. It is at 63.2% of V0
  • C. It is at 86.5% of V0
  • D. It is at 50% of V0
Q. In a full adder, how many inputs does it have?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. In a half adder, what does the sum output represent?
  • A. Carry out
  • B. Logical AND
  • C. Logical OR
  • D. XOR of inputs
Q. In a half-wave rectifier, what happens to the negative half of the AC signal?
  • A. It is amplified
  • B. It is blocked
  • C. It is inverted
  • D. It is passed through
Q. In a JFET, what is the effect of increasing the gate-source voltage (Vgs)?
  • A. Increases the drain current
  • B. Decreases the drain current
  • C. Has no effect on the drain current
  • D. Increases the gate current
Q. In a monostable 555 timer circuit, what happens when the trigger pin is activated?
  • A. The output goes high for a short duration
  • B. The output remains low
  • C. The output oscillates
  • D. The timer resets
Q. In a monostable 555 timer, what determines the duration of the output pulse?
  • A. The supply voltage
  • B. The value of the timing resistor and capacitor
  • C. The trigger signal duration
  • D. The output load
Q. In a MOSFET, what does the term 'threshold voltage' refer to?
  • A. The maximum voltage the device can handle
  • B. The voltage at which the device turns off
  • C. The minimum gate voltage required to create a conducting channel
  • D. The voltage drop across the drain-source terminals
Q. In a multiplexer, what is the role of the select lines?
  • A. To determine the output based on input values
  • B. To store data
  • C. To provide power
  • D. To control timing
Q. In a multiuser database environment, what is a deadlock?
  • A. A situation where two transactions are waiting for each other to release locks
  • B. A method of data encryption
  • C. A type of database backup
  • D. A way to optimize queries
Q. In a multiuser database environment, what is a potential problem that can arise?
  • A. Data redundancy
  • B. Data inconsistency
  • C. Data isolation
  • D. Data normalization
Q. In a multiuser database environment, what is the role of a DBMS?
  • A. To manage user interfaces
  • B. To provide data storage and retrieval services
  • C. To perform data analysis
  • D. To create reports
Q. In a non-inverting op-amp configuration, what is the relationship between the input and output voltages?
  • A. Vout = Vin
  • B. Vout = Vin + Vref
  • C. Vout = Vin * (1 + Rf/Rin)
  • D. Vout = Vin / (1 + Rf/Rin)
Q. In a non-inverting op-amp configuration, what is the relationship between the input and output voltage?
  • A. Vout = Vin
  • B. Vout = Vin + Vref
  • C. Vout = Vin * (1 + Rf/Rin)
  • D. Vout = Vin / (1 + Rf/Rin)
Q. In a parallel circuit with a diode, if the diode is forward-biased, it will:
  • A. Block current
  • B. Allow current to flow
  • C. Short-circuit the circuit
  • D. Increase the total resistance
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