How many distinct binary trees can be constructed with three nodes?

Which of the following are the non-linear application of op-amp?

1. Current-to-voltage converter
2. Comparator
3. Peak detector
4. Limiter

Anmicroprocessor is operating at 2 MHz frequency and executes the following program :
START : MOV A, B
OUT 55H
DCR B
STA 2700H
NOP
NOP
JMP START
Identify the total number of machine cycles required to execute the above program till the JMP instruction is executed for the first time.

Anexecutes the following instructions
LXI H, 30A0H
DAD H
PCHL
All addresses and constants are in Hex. Let PC be the contents of the program counter and HL be the contents of the HL register pair just after executing PCHL.
Which of the following statements is correct?

Which one of the following circuits is used for converting a sine wave into a square wave?

A super heterodyne receiver has a IF ofkHz. It is tuned to a station broadcasting atKHz and its oscillator is operating atKHz, then theKHz frequency would be

Which of the following meters requires an external power source for its operation?

Which are of the following oscillators is well suited for the generation of wide range audio-frequency sine waves?

The maximum power dissipation capacity of a transistor ismW. If the collector emitter voltage isV, what is the safe collector current that can be allowed through the transistor?

If the carrier modulated by a digital bit stream has one of the possible phases of 0°, 90°,and 270°. Then the modulation is called

The internal resistance of a current source used in the model of a BJT while analyzing a circuit using BJT is :

Which one of the following type of negative feedback increases the input resistance and decreases the output resistance of an amplifier?

Consider a situation where number of minterms with even number of 0's are same as number of minterms with odd number of 1's. Then minterms with even number of 0's and minterms with odd number of 1's are __________ to each other then number of variables is __________ .

Compared to a p-n junction with N_A = N_D = 10¹⁴/cm³, which one of the following statements is TRUE for a p-n junction with N_A = N_D = 10²⁰/cm³?

Assertion (A): The line integral of B about a closed contour, in a region containing steady current, is μ₀ times the total net current, following through the contour of integration.

Reason (R): The curl of B is equal to μ₀ times the current density vector J

In a communication system, a process in which statistical averages and time averages are equal is called as,

All poles and zeros of a driving point immittance function of an L-C network

Sampling frequency of
sin 100pt + cos 200pt + sin 100pt + cos 200pt is:

For real and odd signals, the Fourier series coefficient a_k is __________ .

Identification of highest priority interrupt can be achieved in a minimum time by which of the following schemes?

A super heterodyne receiver has an input circuit tuned to aKHz signal. If the intermediate frequency of the amplifier is tuned toKHz. The quality factor Q for a Image Rejection ratio of 125?

Assertion (A): A fixed bias BJT circuit exhibits better performance as compared to a self bias BJT circuit.

Reason (R): A fixed bias BJT circuit used less components as compared to a self bias BJT circuit.

Which of the following are the memory performance parameters?

1. Access time and latency
2. Block size and Block access time
3. Cycle time and Bandwidth

What is the chemical bonding in silicon semiconductor?

The probability density function of the envelope of narrow band noise is :

For determining the network functions of a two-port network, it is required to consider that

The transfer function of a controller is given as K_p + K_d.s where K_p and K_d are constants. What type of controller is this?

Consider the following statements regarding registers and latches:

1. Registers are made of edge-triggered FFs, whereas latches are made from level-triggered FFs.
2. Registers are temporary storage devices whereas latches are not.
3. A latch employs cross-coupled feedback connections.
4. A register stores a binary word whereas a latch does not.

A load Z_L = R_L + jX_L is to be matched using an ideal transformer to generator of internal impedance Z_S = R_S + jX_S. The ratio of transformer required is __________ .

Given below a block diagram of oscillator circuit with various reactance elements.

For colpitts oscillator which is correct?

The amplifier network is shown below:

r_e and z₀ is:

Which of the following are universal gates?

1. NAND
2. NOR
3. XOR

Which of the following is a microwave power amplifier?

A linear time-invariant, causal continuous time system has a rational transfer function with simple poles at s = - 2 and s = -and one simple zero at s = -A unit step u(t) is applied at the input of the system. At steady state, the output has constant value ofThe impulse response of this system is

As per Hall effect, if any specimen carrying a current I is applied in a transverse magnetic field B, then an electric field E is induced in the specimen in the direction.

Electric dipole is located at origin in a medium with ε_r =has a moment P = (4a_x - 2a_y + a_z ) nC. Then potential at (is:

Consider the following statements regarding the properties of an R-L-C series circuit under resonance:

1. Current in the circuit is in phase with applied voltage
2. Voltage drop across capacitor C and inductance L are equal in magnitude.
3. Voltage across the capacitor is equal in magnitude to the applied voltage.
4. Current in the circuit is maximum.

Which of the following devices is used at the first stage of an electronic voltmeter?

In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2.

The value of current I₀ is approximately

Consider the following statements:
To draw a.c. equivalent circuit of a transistors, all

1. d.c. sources are shorted
2. a.c. sources are shorted
3. d.c. sources are opened
4. a.c. sources are connected to d.c. sources

How many number of branches the root loci of the equation s(s + 2)(s ++ K(s += 0 have?

Who developed the concept of time varying electric field producing a magnetic field?

The signal cos ω_ct + 0.5 cos ω_mt sin ω_ct is

Voice signal band limited to 3.4 KHz is sampled and pulse code modulated usingquantization levels. Ten such signals are time division multiplexed using one 5-bit synchronizing word every alternate frame. The minimum channel bandwidth required for transmission of the TDM signal is

What are the counting stages (Q₁, Q₂) for the counter shown in the figure below?

Which one of the following is a transferred electron device?

For a standard 2nd order system the maximum overshoot isto an unit step input. If the magnitude of the input is doubled, then maximum overshoot and percentage of maximum overshoot is:

Which of the following represent a wave equation for a tightly stretched elastic string of length l and 'm', mass per unit?

Consider a situation where number of minterms with even number of 0's are same as number of minterms with odd number of 1's. Then minterms with even number of 0's and minterms with odd number of 1's are __________ to each other then number of variables is __________ .

In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor Q2.

The value of current I₀ is approximately