GATE 1992 Electrical Engineering
24 questions across 1 session
The selection of size of conductors for a distributor in a distribution system is governed by
The developed electromagnetic force and or torque in electro $$-$mechanical energy conversion systems act in a direction that tends
Which of the following equations represents the Gauss's law in a homogeneous isotropic medium?
An electrostatic potential is given by $$\phi=2x\sqrt y$$ volt in the rectangular co-ordinate system. The magnitude of the electric field at x = 1 m,y = 1 m is _________V/m
A Buchholz relay is used for
The inductance of a power transmission line increases with
Two transformers of different $$kVA$$ ratings workings in parallel share the load in proportion to their ratings when their
In load flow studies of a power system, the quantities specified at a voltage-controlled bus are ____________and___________
The voltage series feedback in a feedback amplifier leads to
If the $$HLT$$ instruction of a $$8085$$ microprocessor is executed,
In an $$RC$$- coupled common Emitter amplifier which of the following is true?
A unity feedback system has the open loop transfer function $$G\left( s \right) = {1 \over {\left( {s - 1} \right)\left( {s + 2} \right)\left( {s + 3} \right)}}$$ The Nyquist plot...
The torque angle of a synchronous machine operating from a constant voltage bus, is usually defined as the space angle between
Which of the following figure(s) represent valid root loci in the $$s$$ - plane for positive $$K?$$ Assume that the system has transfer function with real coefficient.
In a common Emitter amplifier, the un bypassed emitter resistance provides
Two transformers of the same type, using the same grade of iron and conductor materials, are designed to work at the same flux and current densities; but the linear dimensions of o...
An ideal op-amp is used to make an inverting amplifier. The two input terminals of the op-amp are at the same potential because
Neglecting all losses, the developed torque $$(T)$$ of $$d.c.$$ separately excited motor, operating under constant terminal voltage, is related to its output power $$(P)$$ as under
A separately excited $$d.c.$$ motor has an armature resistance of $$0.5$$ $$ohm.$$ It runs off a $$250$$ $$V$$ $$d.c.$$ supply drawing an armature current of $$20$$ $$A$$ at $$1,50...
A resistance is measured by the voltmeter- ammeter method employing d.c. excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the...
The impulse response of a network is $$h\left( t \right) = 1$$ for $$0 \le t < 1$$ and zero otherwise. Sketch the impulse response of two such networks in cascade, neglecting loadi...
In a dual slope integrating type digital voltmeter the first integration is carried out for $$10$$ periods of the supply frequency of $$50Hz.$$ If the reference voltage used is $$2...
An unshielded moving iron voltmeter is used to measure the voltage in an a.c. circuit. If a stray d.c. magnetic field having a component along the axis of the meter coil appears, t...
In $$d.c.$$ potentiometer measurements, a second reading is often taken after reversing the polarities of the $$s.c.$$ supply and the unknown voltage, and the average of the two re...