Match the waveforms on the left-hand side with the correct mathematical description listed on the right-hand side.

 matrix has all its entries equal to -1. The rank of the matrix is

Figure shown a, d, c resistive network and its graph is drawn aside. A ‘proper tree’ chosen for analyzing the network will contain the edges.

Thyristor circuits that directly convert poly-phase ac voltages from one frequency to another frequency are called _________________

The number of positive real roots of the equation  is ________________

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

The closed loop system, of figure, is stable if the transfer function  is stable. (True=1,False=0)

A practical R-C sinusoidal oscillator is built using a positive feedback amplifier with a closed loop-gain slightly less than unity. (True=1, False=0)

The value of the integral   is equal to ______________

A piezo-electric pick up is an example for an active transducer. (True=1/False=0)

A Lissajous pattern, as shown in figure, is observed on the screen of a CRO when voltages of frequencies  are applied to the x and y plates respectively.  is then equal to

The eigen-values of the matrix  are

A precise measurement guarantees accuracy of the measured quantity (True=1/False=0).

Referring to the figure the type of load is

The superposition principle is not applicable to a network containing time-varying resistors
Choose the correct options

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

A set of 3 equal resistor, each of value , connected in star across RYB of given figure consumes the same power as the unbalanced delta-connected load shown. The value of is __________Ω

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

The matrix of any state-space equation for the transfer function  of the system, shown below in figure is

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

If two vectors u and v in a plane are linearly independent, then, they cannot be collinear. ( True=1, False=0)

Static magnetic fields induce currents in closed conducting loops. ( True=1, False=0)

A line-commutated inverter changes dc voltage to ac voltage. (True=1/False=0)

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-to-ground fault MVA at a bus. (True=1/False=0)

The number of positive real roots of the equation,  is _______________.

When a charge is given to a conductor

In an electrostatic field . ( True=1, False=0)

The output voltage of a six-pulse double star rectifier is the same as that of a three-phase half- wave rectifier. (True=1/False=0)

If f(t) is the step-response of a linear-time invariant system, then its impulse response is given by .
(True=1, False=0)

The number of linearly independent solutions of the system of equations  , is equal to _________________

Match the appropriate item from the right-hand side with those on the left-hand side.         

The stack pointer of a microprocessor is at A001 At the end of execution of following instructions, the value of stack pointer is _____________

PUSH        PSW

X        THL        

PUSH        D

JMP         FC70 H

A hollow conductor is at a potential V. The potential at any point inside the hollow is V.  ( True=1, False=0)

The inductance of a coil is proportional to the Cube of the number of turns, all over parameters remaining the same. (True=1, False=0)

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

Match the polar plots for the following functions on the left hand side *(MTA since incomplete question)                 

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

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

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

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

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

An analog comparator is a high-gain amplifier whose output is always either in positive or in negative saturation. (True=1, False=0)

In the given circuit, the voltage , has a phase angle of _____________ with respect to .

The light load adjustment is carried out on a single-phase house-service energy meter under _________________ power factor conditions.

A triac can be triggered by a gate pulse of ______________ polarity.

A 3-phase induction motor coupled to a pump is operating at normal speed. If one line gets disconnected, the motor stops. (True=1/False=0)

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 on the right hand side below)

(a) Capacitor  is open

(b) Capacitor  is open

(c) Capacitor  is open

(d)  is shorted

(P) All dc voltages normal,  increases marginally

(Q) Collector of  is at ,

(R) All dc voltages normal, gain of  stage increase  decrease

(S) All dc voltages normal,

(T) All dc voltages normal, overall gain of the amplifier increases,  increases

(U) No change

A six pole 50Hz induction motor rotating at 1400 rpm is in generating mode. (True=1/False=0)

_____________ torque is not provided in an electromagnetic flux meter.         

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

In a variable frequency induction motor drive, the voltage must be varied linearly to the frequency.  (True=1/False=0)

Match the items on the right hand side with those on left hand side

(a) Commutation                             (P) Resistive load

(b) V-curves                                     (Q) Inductive load

(c) Freewheeling diode                  (R) Capacitive load

(d) Overlap                                       (S) Inter pole

                                                           (T) Source Inductance

                                                           (U) Synchronous motor

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

Given figure, shows a non-inverting op-amp summer with  and . The output voltage   __________________

HVDC Transmission is preferred to EHV-AC because

The charging current of a 400kV transmission line is more than that of a 220kV line of the same length. (True=1/False=0)

The increase in resistance due to non-uniform distribution of current in a conductor is known as skin effect. (True=1/False=0)