Given figure shows a two stage small signal transistor feedback amplifier. Match the defective component (listed on the left hand side below) with its probable effect on the circuit (listed below)

List - $${\rm I}$$
$$A.$$ Capacitor $${C_1}$$ is open
$$B.$$ Capacitor $${C_3}$$ is open
$$C.$$ Capacitor $${C_4}$$ is open
$$D.$$ $$R{C_2}$$ is shorted

List - $${\rm II}$$
$$P.$$ All $$dc$$ voltages normal, $${V_0}$$ increases marginally
$$Q.$$ Collector of $$T{R_2}$$ at $${V_{cc}},\,\,{V_0} = 0$$
$$R.$$ All $$dc$$ voltages normal, gain of $${2^{nd}}$$ stage decreases, $${V_0}$$ decreases.
$$S.$$ All $$dc$$ voltage normal, $${V_0} = 0$$
$$T.$$ All $$dc$$ voltages normal, overall gain of the amplifier increases, $${V_0}$$ increase
$$U.$$ No change

Figure below shows an op-amp amplifier. Find the output voltage in steady state condition where $$(i)$$ switch is open $$(ii)$$ $$S$$ is closed

A practical $$R$$-$$C$$ sinusoidal oscillator is built using a positive feedback amplifier with a closed loop gain slightly less than unity.

In the transistor circuit shown in figure. Collector to ground voltage is $$+20V.$$ Which of the following is the probable cause of error?

Given figure, shows a non - inverting op - amp summer with $${V_1} = 2\,V$$ and $${V_2} = \, - 1V.$$ The output voltage $${V_0} = \_\_\_\_\_$$

A differentiator has transfer function whose

The pole $$-$$ zero configuration of a phase lead compensator is given by

The matrix of any state space equations for the transfer function $$C(s)/R(s)$$ of the system, shown below in. Figure is

The closed loop system , of Figure, is stable if the transfer function $$T\left( s \right) = {{C\left( s \right)} \over {R\left( s \right)}}$$ is stable.

The number of positive real roots of the equation $${s^3} - 2s + 2 = 0$$ is __________.

The number of comparisons carried out in a $$4$$-bit flash type $$A/D$$ converter is

The contents of the accumulator in an $$8085$$ microprocessor is altered after the execution of the instruction.

The stack pointer of a microprocessor is at $$A001H.$$ At the end of execution of following instructions, the value of stack pointer is _____________
$$\eqalign{ & PUSH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,PSW \cr & XTHL \cr & PUSH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,D \cr & JMP\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,FC70H \cr} $$

Figure shows $$a$$ $$b$$ $$c$$. resistive network and its graph is drawn aside. $$A$$ 'proper tree' chosen for analyzing the network will contain the edges :

At resonance, the given parallel circuit constituted by an iron - cored coil and a capacitor behaves like

In the given circuit, the voltage $$\overline {{V_L}} $$ has a phase angle of ____________ with respect to $$\overline {{V_S}} .$$

A set of $$3$$ equal resistors, each of value $${R_X},$$ connected in star across $$RYB$$ of given Fig. consumes the same power as the unbalanced delta-connected load shown. The value of $${R_X}$$ is _____________ $$\Omega .$$

If a two-port network is passive, then we have, with the usual notation, the following relationship

Superposition principle is not applicable to a network containing time-varying registors.

A precise measurement guarantees accuracy of the measured quantity.

A $$0$$-$$10$$ $$mA$$ $$PMMC$$ ammeter reads $$4$$ $$mA$$ in a circuit. Its bottom control spring snaps suddenly. The meter will now read nearly

A d.c. potentiometer is designed to measure up to about $$2$$ $$V$$ with a slide wire of $$800$$ mm. A standard cell of emf $$1.18V$$ obtains balance at $$600$$ mm. A test cell is seen to obtain balance at $$680$$ mm. The emf of the test cell is

A lissajous pattern, as shown in figure below, is observed on the screen of a $$CRO$$ when voltages of frequencies $${f_x}$$ and $${f_y}$$ are applied to the $$x$$ and $$y$$ plates respectively. $${f_x}:{f_y}$$ is then equal to

Skew is used in induction motors in order to reduce torque due to

When a transformers winding suffers a short-circuit, the adjoining turns of the same winding experience

Two transformers of identical voltage but of different capacities are operating in parallel. For satisfactory load sharing

Match the following List-$${\rm I}$$ with List-$${\rm II}$$

List $$-$$ $${\rm I}$$
$$(a)$$ Line charge
$$(b)$$ Magnetic Flux Density
$$(c)$$ Displacement current
$$(d)$$ Power flow

List $$-$$ $${\rm II}$$
$$(P)$$ Maxwell's
$$(Q)$$ Poynting vector
$$(R)$$ Transmission line conductors
$$(S)$$ Biot-Savart's law
$$(T)$$Gauss's law
$$(U)$$ Faraday's law

In electrostatic field $$\nabla\times\overrightarrow E\equiv0$$

Static magnetic fields induce currents in closed conducting loops.

$$A$$ $$\,\,5 \times 7$$ matrix has all its entries equal to $$1.$$ Then the rank of a matrix is

The eigen values of the matrix $$\left[ {\matrix{ a & 1 \cr a & 1 \cr } } \right]$$ are

The number of linearly independent solutions of the system of equations
$$\left[ {\matrix{ 1 & 0 & 2 \cr 1 & { - 1} & 0 \cr 2 & { - 2} & 0 \cr } } \right]\,\,\left[ {\matrix{ {{x_1}} \cr {{x_2}} \cr {{x_3}} \cr } } \right] = 0$$ is equal to

The integration of $$\int {{\mathop{\rm logx}\nolimits} \,dx} $$ has the value

The volume generated by revolving the area bounded by the parabola $${y^2} = 8x$$ and the line $$x=2$$ about $$y$$-axis is

The directional derivative of $$f\left( {x,y} \right) = 2{x^2} + 3{y^2} + {z^2}\,\,$$ at point $$P\left( {2,1,3} \right)\,\,$$ in the direction of the vector $$\,\,a = \overrightarrow i - 2\overrightarrow k \,\,$$ is

A switched mode power supply operating at $$20$$ $$kHz$$ to $$100$$ $$kHz$$ range uses as the main switching element

A triac can be triggered by a gate pulse of __________ polarity

The output voltage of a six - pulse double star rectifier is the same as that of a three - phase half wave rectifier

Match the following

List $$-$$ $${\rm I}$$
$$A.$$ Commutation
$$B.$$ $$V$$ $$-$$ Curves
$$C.$$ Free wheeling diode
$$D.$$ Overlap

List $$-$$ $${\rm II}$$
$$P.$$ Resistive load
$$Q.$$ Inductive load
$$R.$$ Capacitive load
$$S.$$ Inter pole
$$T.$$ Source Inductance
$$U.$$ Synchronous motor

Referring to the figure the type of load is

A line - commutated inverter changes $$dc$$ voltage to $$ac$$ voltage

Thysistor circuits that directly convert poly phase $$ac$$ voltage from one frequency to another frequency are called _______.

The charging current of a $$400$$ kV transmission line is more than that of a $$220$$ kV line of the same length.

In a $$400$$ kV network, $$360$$ kV is recorded at a $$400$$ kV bus. The reactive power absorbed by a shunt reactor rated for $$50$$ MVAR, $$400$$ kV connected at the bus is

Consider a three-phase, $$50$$ $$Hz$$, $$11$$ $$kV$$ distribution system. Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self capacitance of the insulator is $$5$$ times shunt capacitance. The voltage drop across botton most disc is:

The increase in resistance due to non-uniform distribution of current in a conducto $$r$$ is known as _______effect

In a system, there are two generators operating in parallel. One generator, of rating 250 MVA, has an inertia-constant of 6 MJ/MVA while the other generator of 150 MVA has an inertia-constant of 4 MJ/MVA. The inertia-constant for the combined system on 100 MVA common base is ________MJ/MVA.

In a power-system, the $$3$$-phase fault MVA is always higher than the single-line-ground fault MVA at a bus (State True or False)

HVDC transmission is preferred to EHV __ AC because

If $$f(t)$$ is the step-response of a linear time-invariant system, then its impulse response is given by ___________

The value of the integral $$\int_{-5}^{+6}e^{-2t}\delta\left(t-1\right)dt$$ is equal to ________.