GATE 1994 Electrical Engineering
39 questions across 1 session
The increase in resistance due to non-uniform distribution of current in a conducto $$r$$ is known as _______effect
The number of positive real roots of the equation $${s^3} - 2s + 2 = 0$$ 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...
Superposition principle is not applicable to a network containing time-varying registors.
If a two-port network is passive, then we have, with the usual notation, the following relationship
In electrostatic field $$\nabla\times\overrightarrow E\equiv0$$
Static magnetic fields induce currents in closed conducting loops.
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
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 inert...
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 $$\,\,a = \overrightar...
$$A$$ $$\,\,5 \times 7$$ matrix has all its entries equal to $$1.$$ Then the rank of a matrix is
A line - commutated inverter changes $$dc$$ voltage to $$ac$$ voltage
The contents of the accumulator in an $$8085$$ microprocessor is altered after the execution of the instruction.
A differentiator has transfer function whose
When a transformers winding suffers a short-circuit, the adjoining turns of the same winding experience
Match the following List-$${\rm I}$$ with List-$${\rm II}$$ List $$-$$ $${\rm I}$$ $$(a)$$ Line charge $$(b)$$ Magnetic Flux Density $$(c)$$ Displacement current $$(d)$$ Power flow...
A switched mode power supply operating at $$20$$ $$kHz$$ to $$100$$ $$kHz$$ range uses as the main switching element
The output voltage of a six - pulse double star rectifier is the same as that of a three - phase half wave rectifier
HVDC transmission is preferred to EHV __ AC because
Skew is used in induction motors in order to reduce torque due to
The number of linearly independent solutions of the system of equations $$\left[ {\matrix{ 1 & 0 & 2 \cr 1 & { - 1} & 0 \cr 2 & { - 2} & 0 \cr } } \right]\,\,\left[ {\matrix{ {{x_1...
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
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)
The number of comparisons carried out in a $$4$$-bit flash type $$A/D$$ converter is
The pole $$-$$ zero configuration of a phase lead compensator is given by
Thysistor circuits that directly convert poly phase $$ac$$ voltage from one frequency to another frequency are called _______.
Two transformers of identical voltage but of different capacities are operating in parallel. For satisfactory load sharing
The stack pointer of a microprocessor is at $$A001H.$$ At the end of execution of following instructions, the value of stack pointer is _____________ $$\eqalign{ & PUSH\,\,\,\,\,\,...
The charging current of a $$400$$ kV transmission line is more than that of a $$220$$ kV line of the same length.
Match the following List $$-$$ $${\rm I}$$ $$A.$$ Commutation $$B.$$ $$V$$ $$-$$ Curves $$C.$$ Free wheeling diode $$D.$$ Overlap List $$-$$ $${\rm II}$$ $$P.$$ Resistive load $$Q....
A triac can be triggered by a gate pulse of __________ polarity
A practical $$R$$-$$C$$ sinusoidal oscillator is built using a positive feedback amplifier with a closed loop gain slightly less than unity.
The eigen values of the matrix $$\left[ {\matrix{ a & 1 \cr a & 1 \cr } } \right]$$ are
A $$0$$-$$10$$ $$mA$$ $$PMMC$$ ammeter reads $$4$$ $$mA$$ in a circuit. Its bottom control spring snaps suddenly. The meter will now read nearly
The value of the integral $$\int_{-5}^{+6}e^{-2t}\delta\left(t-1\right)dt$$ is equal to ________.
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...
A precise measurement guarantees accuracy of the measured quantity.
If $$f(t)$$ is the step-response of a linear time-invariant system, then its impulse response is given by ___________