electroquest

In the circuit shown below X and Y are digital inputs and Z is a digital output .The equivalent circuit is a

• NAND Gate

• NOR Gate

• XOR Gate

• XNOR Gate

Which of the following amplifier circuit using junction transistor has the best gain ?

• Common Base

• Common Collector

• Common Emitter

• All have the same gain

The output expression for the Karnaugh Map shown below is

• QR' + S

• QR' + S'

• QR + S

• QR + S'

Time scaling won't work for the function

• Unit step

• Impulse

• Ramp

• Signum

What will be the voltage Vout if VA = 3V and VB = -5V and the diodes are ideal ?

• 5V

• 2V

• 0V

• 3V

Match the logic gates in column A with their equivalents in column B

• P-2, Q-4, R-1, S-3

• P-4, Q-2, R-1, S-3

• P-2, Q-4, R-3, S-1

• P-4, Q-2, R-3, S-1

Batteries (Cells) are connected in two rows in parallel (each row has N number of batteries) to pass the current of 6A through an external resistor of 0.7 Ω. The voltage of each battery is 2.1 V with 0.5 Ω internal resistance. The number of batteries required to achieve 6A current is

• 10

• 14

• 12

• 16

We can apply the standard test signal to give output to :

• Time-Invariant Systems

• Time-Variant Systems

• Non-Linear Systems

• Linear Systems

For the network shown, the equivalent Thevenin voltage and Thevenin impedance as seen across terminal 'ab' is

• 10 v in series with 12 Ω

• 65 v in series with 15 Ω

• 50 v in series with 2 Ω

• 35 v in series with 2Ω

What are the advantages of tuned amplifiers?

• Minimize the power loss

• Frequency is high

• Suitable for all radio transmitters & receivers

• amplify defined frequencies