BSNL JTO Recruitment Test

a) high conductivity and low temperature coefficient

b) high conductivity and large temperature coefficient

c) low conductivity and zero temperature coefficient

d) low conductivity and high temperature coefficient

a) Air

b) Ferrite

c) Powdered ion

d) Steel

a) C a V1/3

b) C a V-1/3

c) C a V1/2

d) C a V-1/2

a) A material showing perfect conductivity and Meissner effect below a critical temperature

b) A conductor having zero resistance

c) A perfect conductor with highest dimagnetic susceptibility

d) A perfect conductor which becomes resistive when the current density through it exceeds a critical value

a) Near the transformer

b) Near the circuit breaker

c) Away from the transformer

d) None

a) Increased

b) Decreased

c) Neither a nor b

d) Both a and b

a) Are available locally

b) Are made of the semiconductor material in its purest from

c) Have more electrons than holes

d) Have zero energy gaps

a) Channel resistance

b) Size of depletion regions

c) Voltage drop across channel

d) Gate reverse bias

a) 1010

b) 105

c) 10-4

d) 10-6

a) high input impedance

b) low input impedance

c) same input impedance

d) none

a) ohmic

b) bilateral

c) unilateral

d) both a and b

a) Pair of SCRs

b) Pair of four layer SCRs

c) Diode and two resistors

d) Triac width

a) balun

b) broad band directional coupler

c) double stub

d) single stub of adjustable position

a) by an LC network

b) as an RC driving point impedance

c) as an RC driving point admittance

d) only by an RLC network

a) The induction field diminishes as the square root of the distance and is only appreciable in the vicinity of the conductor.

b) In the radiation, magnetic field is minimum when the current is maximum.

c) The radiation resistance of a short doublet antenna is extremely high.

d) Mean rate of power through a unit area of spherical sphere surrounding this doublet is proportional to the square of the elemental length, other factors remaining constant.

a) Inductive loading

b) Resistive loading

c) Capacitive loading

d) Shielding

a) 49 W

b) 60 W

c) 70 W

d) 140 W

a) 0.4456 0

b) 1.44560

c) 2.44560

d) 3.44560

a) Polystyrene

b) Glass of low refractive index

c) Paraboloid surfaces

d) Dielectric media having large refractive index

a) Electrodynamometer

b) PMMC

c) Electrostatic

d) Moving iron

a) An ac ammeter will read less than 10A but more than 5A

b) An ac ammeter will read only 5A

c) A dc ammeter will read 10A

d) A dc ammeter will read zero

a) power factor of the circuit is high

b) impedance of the circuit is high

c) bandwidth is large

d) none of these

a) the maximum number of input channels

b) the minimum duration of the glitch it can capture

c) it's internal clock period

d) the minimum amplitude of input signal it can display

a) pure metals

b) pure insulators

c) sintered mixtures of metallic oxides

d) pure semiconductor

a) peak repetitive off state forward voltage

b) peak working off state forward voltage

c) peak working off state reverse voltage

d) peak non-repetitive off state forward voltage

a) two full converters in series

b) two full converters connected back to back

c) two full converters connected in parallel

d) two semi converters connected back to back

a) increases with temperature

b) remains constant

c) slightly increase with temperature

d) decrease with temperature

a) connecting a high impedance directly to low impedance

b) selection of components which are compatible

c) transferring maximum amount of signal between different kinds of circuits.

d) RC coupled stages

a) They have higher input impedance

b) They have high switching time

c) They consume less power

d) Mobility of electrons is greater than that of holes

a) Increase in ICEO

b) Increase in ac current gain

c) Decrease in ac current gain

d) Increase in output resistance

a) 13. 3 KHz

b) 30KHz

c) 10KHz

d) 40KHz

a) is distortion free

b) consists of positive half cycles only

c) is like the output of a full wave rectifier

d) comprises short duration current pulses

a) lowers its lower 3 dB frequency

b) raises its upper 3 dB frequency

c) increases its bandwidth

d) all of the above

a) Block becomes redundant

b) A FM detector would be required

c) A high frequency signal generator

d) An additional local oscillator will be needed

a) greater speed

b) slower speed

c) average speed

d) none of the above

a) is independent of frequency

b) decreases with increase of frequency

c) increases with increase of frequency

d) varies as square root of frequency

1. High loop gain 2. Less ringing

3. Greater damping 4 Negative dB gain margin

System stability requirements would include

a) 1 and 3

b) 1, 2 and 3

c) 1 and 4

d) 2, 3 and 4

a) FM generation only

b) 100AM generation only

c) PM generation only

d) both PM and AM generation

a) reduce x-ray emission

b) ensure that each beam strikes only its own dots

c) increase screen brightness

d) provide degaussing for the screen

a) the keyed AGC amplifar

b) a clipper

c) an integrator

d) a sawtooth current

a) no electric line is in direction of propagation

b) no magnetic line is in direction of propagation

c) bath magnetic & electric lines are is direction of propagation

d) neither magnetic nor electric lines in direction of propagation

a) Partition noise

b) Flicker noise

c) resistance

d) Short noise

a) capacitance

b) Inductance

c) Resistance

d) Is a linear device

The initial and final values of F (t) will be respectively-

a) zero and 1

b) zero and 10

c) 10 and zero

d) 70 and 80

a) EIRP

b) Antenna size

c) Coverage area

d) Antenna gain

a) horizontal blanking

b) vertical blanking

c) the serrations

d) the horizontal retrace

a) washed

b) inherited

c) admired

d) attempt

a) water

b) stone

c) air

d) hills

a) bunch

b) flock

c) herd

d) comet

You can buy a book. You can read it.

a) and

b) nor

c) either

d) neither

a) Ministry of Home Affairs

b) Ministry of Law

c) Prime Minister's Secretariat

d) None of these

a) President's Rule is to be imposed

b) Emergency is declared

c) Services of a Government servant are to be terminated without any enquiry

d) A political party of national level is to be banned

a) Becquerel

b) Madam Curie

c) Rutherford

d) Jenner

a) 1995-2000

b) 1996-2001

c) 1997-2002

d) 1998-2003

a) 5,000 MW

b) 10,000 MW

c) 15,000 MW

d) 20,000 MW

a) 1769

b) 1789

c) 1889

d) 1869

a) 1/10th of total membership

b) 1/6th of total membership

c) 1/4th of total membership

d) 1/5th of total membership

a) 6

b) 7

c) 9

d) 10

a) 1000 meridian

b) 00 meridian

c) 1800 meridian

d) 900 meridian

a) Sriharikota

b) Cape Kennedy

c) Bangalore

d) A Soviet cosmodrome

a) Aristotle

b) Socrates

c) Plato

d) None of them

a) The Spanish Civil War

b) The American Civil War

c) The French Revolution

d) The Russian Revolution

a) To put a limit on Parliament's amendatory powers

b) To give unlimited powers to Parliament to amend the Constitution

c) To give precedence to Directive Principles over Fundamental Rights

d) None of these

a) N. Korea

b) France

c) India

d) China

a) Tamil Nadu

b) Maharashtra

c) Jammu and Kashmir

d) Nagaland