One of the applications of current mirror is

A $$NPN$$ Si transistor is meant for low-current audio amplification. Match is following characteristic against their va

Match the following: List - $${\rm I}$$ (Circuit) List - $${\rm II}$$ (Functions) $$(P)$$$$\,\,\,\,\,$$ High-pass fi

In the circuit of figure $${R_s} = 2\,k\Omega ,$$ $${R_L} = 5\,k\Omega $$ For the op-amp $$A = {10^5},$$ $${R_i} = 100\,

Show that the circuit given in fig. will work as an oscillator at $$f = {1 \over {2\pi RC}},$$ if $${R_1} = 2{R_2}$$

For block diagram shown in Figure $$C(s)/R(s)$$ is given by

The output of a linear time invariant control system is $$c(t)$$ for a certain input $$r(t).$$ If $$r(t)$$ is modified b

None of the poles of a linear control system lie in the right half of $$s$$-plane. For a bounded input, the output of th

The number of roots on the equation $$2{s^4} + {s^3} + 3{s^2} + 5s + 7 = 0$$ that lie in the right half of $$S$$ plane i

The asymptotic magnitude Body plot of a system is given in Figure. Find the transfer function of the system analytically

The phase lead compensation is used to

The state-space representation of a system is given by $$\left[ {\matrix{ {\mathop {{X_1}}\limits^ \bullet } \cr

Match the following

In a digital combinational circuit with $$4$$ inputs $$(A, B, C, D),$$ it is required to obtain an output of logical $$1

$$(a)$$ Construct the truth table for the circuit given in Figure $${Q_1},{Q_2}$$ and $${Q_3}$$ are outputs and the cloc

In standard $$TTL$$ gates, the totem pole output stage is primarily used to

The open collector outputs of two$$2$$-inputs $$NAND$$ gates are connected to a common pull up resistor. If the input to

In the circuit shown in Figure, it is desired to have a constant direct current $$i(t)$$ through the ideal inductor $$L.

The effective inductance of the circuit across the terminals $$A,B$$ in the Figure shown below is

Viewed from the terminals $$A, B$$ the following circuit shown in Figure can be reduced to an equivalent circuit of a si

The switch in the following circuit, shown in Fig. has been connected to the $$12V$$ source for a long time. At $$t=0,$$

A sinusoidal source of voltage $$V$$ and frequency $$f$$ is connected to a series circuit of variables resistance, $$R$$

A circuit with a resistor, inductor and capacitor in series is resonant at $${f_0}\,\,Hz.$$ If all the component values

A circuit consisting of a single resistor $$R$$ and an inductor $$L$$ in series is driven by a $$25$$ $$V$$ $$rms,$$ $$5

Determine the impedance seen by the source $${V_s} = 24\angle {0^0}$$ in the network shown in Fig.

A d.c. voltmeter has a sensitivity of $$1000$$$$\Omega /volt.$$ When it measures half full scale in $$100$$ $$V$$ range,

A moving coil galvanometer is made into a d.c. ammeter by connecting

A symmetrical $$400V,$$ $$3$$-$$\phi $$ supply is connected to the network shown in fig. The phase sequence is $$RYB.$$

Fig. shows the electrostatic vertical deflection system of $$CRT$$. Given that $${V_A}$$ is the accelerating voltage, th

The figure shows input attenuator of a multimeter. The meter reads full-scale with $$12$$ $$V$$ at $$M$$ with the rage s

A 240 V d.c. shunt motor with an armature resistance of 0.5 $$\Omega$$ has a full load current of 40 A. Find the ratio o

Match the following List-I (Test) (A) No load and blocked rotor test (B) Sumpner’s test (C) Swinburn’s test List-II (M

The laws of electromagnetic induction (Faraday's and Lenz's law) are summarized in the following equation:

The efficiency of a 100 kVA transform is 0.98 at full as well as at half load. For this transformer at full load the cop

The magnetizing current in a transformer is rich in

A 3-phase squirrel cage induction motor has a full load efficiency of 0.8 and a maximum efficiency of 0.9. It is operate

A 50 Hz transformer having equal hysteresis and eddy current losses at rated excitation is operated at 45 Hz at 90% of i

A synchronous generator connected to an infinite bus is overexcited. Considering only the reactive power, from the point

The armature of a single phase alternator is completely wound with T single turn coils distributed uniformly. The induce

A $$DC$$ shunt generator delivers $$60$$ $$KW$$ at $$240$$ $$V$$ and $$360$$ $$rpm.$$ The armature and field resistances

In a $$50$$ $$KVA,$$ $$11$$ $$KV/400$$ $$V$$ transformers, the iron and copper losses are $$500$$ $$W$$ and $$600$$ $$W$

An infinite number of charges, each equal to $$'q'$$ are placed along the $$x=1,x=2, x=4, x=8, x=16$$ and so on, Find th

An electron moves in the $$X$$-$$Y$$ plane with a speed of $${10^6}\,\,m/s.$$ Its velocity vector makes an angle of $${6

The laws of electromagnetic induction (Faraday's and Lenz's law) are summarized in the following equation

$$A = \left[ {\matrix{ 2 & 0 & 0 & { - 1} \cr 0 & 1 & 0 & 0 \cr 0 & 0 & 3 &

A set of linear equations is represented by the matrix equations $$Ax=b.$$ The necessary condition for the existence of

If the vector $$\left[ {\matrix{ 1 \cr 2 \cr { - 1} \cr } } \right]$$ is an eigen vector of $$A = \left

If $$A = \left[ {\matrix{ 5 & 0 & 2 \cr 0 & 3 & 0 \cr 2 & 0 & 1 \cr } } \right]

The value of $$\,\,\,\int\limits_1^2 {{1 \over x}\,\,\,dx\,\,\,\,} $$ computed using simpson's rule with a step size of

The Laplace transform of $$\,\left( {{t^2} - 2t} \right)\,u\left( {t - 1} \right)$$ is ______________.

The $$MOSFET$$ switch in its on - state may be considered equivalent to

The uncontrolled electronic switch employed in power electronic converters is

In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.

When the firing angle $$\alpha $$ of a single phase, fully controlled rectifier feeding constant $$d.c.$$ current into a

A $$3$$-phsae, fully controlled, converter is feeding power into a $$d.c.$$ load at a constant current of $$150A.$$ The

The reflection coefficient for the transmission line shown in figure at $$P$$ is

Series capacitive compensation in $$EHV$$ transmission lines is used to

A shunt reactor of $$100$$ MVAR is operated at $$98$$% of its rated voltage and $$96$$% of its rated frequency. The reac

A cable has the following characteristics. $$L = 0.201\,\,\mu H/m\,\,$$ and $$\,C = 196.2\,pF/m.\,$$ The velocity of wav

Each conductor of a $$33$$ $$kV,$$ $$3$$ phase system is suspended by a string of three similar insulators. The ratio of

A power station consists of two synchronous generators A and B of ratings 250 MVA and 500 MVA with inertia constant 1.6

An alternator is connected to an infinite bus as shown in figure. It delivers 1.0 p.u. current at 0.8 p.f lagging at V =

For the network shown in figure the zero sequence reactances in p.u. are indicated. The zero sequence driving point reac

In a power system, the fuel inputs per hour of plants $$1$$ and $$2$$ are given as $${F_1} = 0.20\,P_1^2 + 30\,{P_1} +

The neutral of $$10$$ $$MVA,$$ $$11$$ $$kV$$ alternator is earthed through a resistance of $$5$$ ohms. The earth fault r

Bulk power transmission over long HVDC lines are preferred, on account of

The Laplace transform of $$\left(t^2\;-\;2t\right)u\left(t\;-\;1\right)$$ is