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EKT 02 2015 For Electrical and Electronics Stream Question Paper Online Test



Question #1
What is the next number in the series 1,3,11,19,37,_____
Options
1) 55
2) 41
3) 56
4) None of the above
Question Skipped
Question #2
A car travelled 75% of way from town A to town B at an average speed of 50 mph. The car travelled at the average speed of S mph for remaining part of the trip. The average speed for the entire trip was 40 mph . What is S?
Options
1) 10
2) 20
3) 25
4) 30

Question #3
If the area of the square is increased by 69% the side of the square increases by
Options
1) 13 %
2) 30 %
3) 39 %
4) 130 %
Question Skipped
Question #4
The value of Sin ? + Cos? will be greatest when ? =
Options
1) 30
2) 45
3) 60
4) 90
Question Skipped
Question #5
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
Options
1) Pressure and Young's modules
2) Planck's constant and Angular momentum
3) Impulse and moment of force
4) Force and rate of change of linear Momentum
Question Skipped
Question #6
Out of the following, which one is least commonly emitted by radioactive substance?
Options
1) electrons
2) electromagnetic radiations
3) alpha particles
4) neutrons
Question Skipped
Question #7
Sound produced at a point is heard by a person after 5 seconds, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Options
1) 1.8 km, 0.15 km
2) 2.2 km, 0.20 km
3) 2.8 km, 0.25 km
4) 3.3 km, 0.30 km
Question Skipped
Question #8
The most electronegative element among the following is
Options
1) sodium
2) bromine
3) fluorine
4) oxygen
Question Skipped
Question #9
The nuclear particles which are assumed to hold the nucleons together are
Options
1) electrons
2) positrons
3) neutrons
4) mesons
Question Skipped
Question #10
The most abundant rare gas in the atmosphere is
Options
1) He
2) Ne
3) Ar
4) Xe
Question Skipped
Question #11
Quantizing noise occurs in
Options
1) PCM
2) Time Division Multiplexer
3) FDM
4) PPM
Question Skipped
Question #12
Which of the following antennas is best excited from a waveguide?
Options
1) Biconical
2) Horn
3) Helical
4) Discone
Question Skipped
Question #13
The peak transmitted power in a radar system is increased by a factor of 16 the maximum range will be increased by a factor of
Options
1) 2
2) 4
3) 8
4) 16
Question Skipped
Question #14
The energy stored will be least in
Options
1) coil
2) capacitor
3) resistor
4) same energy will be stored in all
Question Skipped
Question #15
Thevenin’s theorem is applied to networks with
Options
1) DC source only
2) AC source only
3) both AC & DC source
4) none of the above
Question Skipped
Question #16
The Shannon’s Theorem sets limit on the
Options
1) highest frequency that may be sent over channel
2) maximum capacity of a channel with a given noise level
3) maximum number coding levels in a channel
4) maximum number of quantizing levels in a channel
Question Skipped
Question #17
Maxwell’s electromagnetic equations are valid under all conditions except one that is
Options
1) they do not apply to non-isotropic media
2) they do not apply to non-homogeneous media
3) they do not apply to media which move with respect to system coordinates
4) they do not apply to non-linear-media
Question Skipped
Question #18
Given a carrier frequency of 100 KHz and a modulating frequency of 5KHz, the bandwidth of AM transmission is
Options
1) 5KHz
2) 200KHz
3) 10KHz
4) 20KHz
Question Skipped
Question #19
In a modulation system, if modulating frequency is doubled, the modulation index also becomes double, the system is
Options
1) FM
2) AM
3) PM
4) both FM and AM
Question Skipped
Question #20
The bandwidth requirement of a telephone channel is
Options
1) 3KHz
2) 5KHz
3) 10KHz
4) 15KHz
Question Skipped
Question #21
In class A operation of an amplifier the current flows through the active device for
Options
1) whole of the input cycle
2) half of the input cycle
3) more than half of the input cycle
4) more than three fourth of the input cycle
Question Skipped
Question #22
P Type Semiconductor material as a whole is
Options
1) positively charged
2) negatively charged
3) electrically neutral
4) dipole
Question Skipped
Question #23
Hartley oscillator is
Options
1) an inductively coupled oscillator
2) capacitor coupled oscillator
3) switchable for low frequencies
4) resistance coupled oscillator
Question Skipped
Question #24
h parameters of a transistor
Options
1) are constant
2) vary with temperature
3) are dependant upon collector current
4) none of the above
Question Skipped
Question #25
The target cross section is changing, the best system for accurate tracking is
Options
1) monopulse
2) conical scanning
3) sequential locking
4) lobe switching
Question Skipped
Question #26
Waveguides are not used for frequencies below
Options
1) 1GHz
2) 10 GHz
3) 100 Ghz
4) 500 Mhz
Question Skipped
Question #27
The unit of magnetic susceptibility is
Options
1) Wb-m^2
2) Wb A-m
3) Wb/A-m
4) Wb/m^2
Question Skipped
Question #28
Schmitt trigger can be used as a
Options
1) comparator
2) square wave generator
3) flip flop
4) all of these
Question Skipped
Question #29
For making a capacitor, it is better to select a dielectric having
Options
1) high permittivity
2) low permittivity
3) same permittivity as that of air
4) very low permittivity
Question Skipped
Question #30
The value of resistor creating thermal noise is doubled .the noise power generated is
Options
1) halved
2) doubled
3) unchanged
4) tripled
Question Skipped
Question #31
Subtracting 0101 from 1110 in binary terms, we get
Options
1) 0110
2) 1010
3) 1001
4) 0011
Question Skipped
Question #32
The universal gate is
Options
1) AND
2) NOR
3) XOR
4) NAND
Question Skipped
Question #33
Fidelity in a communication receiver is provided by
Options
1) mixer stage
2) detector stage
3) various amplifier section
4) audio stage
Question Skipped
Question #34
The TWT is sometimes preferred to the magnetron as a radar transmitter outputtube because it is
Options
1) capable of a longer duty cycle
2) a more efficient amplifier
3) more broadband
4) less noisy
Question Skipped
Question #35
Modulation system used for video modulation in tv transmission is
Options
1) DSB
2) VSB
3) SSB
4) SSBSC
Question Skipped
Question #36
A yagi antenna produces
Options
1) eight pattern
2) broadside pattern
3) end fire array
4) helical pattern
Question Skipped
Question #37
Medium frequency waves travel mainly as
Options
1) sky waves
2) surface waves
3) space waves
4) ground wave
Question Skipped
Question #38
In a two cavity klystron , the input cavity resonator is also known as
Options
1) velocity modulator
2) catcher cavity
3) buncher cavity
4) accelerator
Question Skipped
Question #39
When the gate of a P- channel junction field effect transistor is more positive, the draincurrent
Options
1) is increased
2) is reduced
3) remains unaltered
4) decreases
Question Skipped
Question #40
Multiplication of 2 binary numbers A and B yields 11011; if A is 101 B is
Options
1) 101
2) 111
3) 110
4) none of these
Question Skipped
Question #41
Which of the following can measure pressure directly?
Options
1) LVDT
2) strain guage
3) Rotameter tube
4) bourdon tube
Question Skipped
Question #42
The binary code of (21.125)10 is
Options
1) 10101.001
2) 10100.001
3) 10101.010
4) 10100.111
Question Skipped
Question #43
An op-amp zero crossing detector is basically_______converter
Options
1) sine to square wave
2) square to sine wave
3) sine to sine wave
4) sine to triangle wave
Question Skipped
Question #44
Which of the following is not a 8 bit microprocessor
Options
1) INTEL8085
2) MOTOROLA6800
3) ZILOG280
4) FAIRCHILD9440
Question Skipped
Question #45
_________is used for keeping oscillator frequency away from any drift
Options
1) PLL
2) VCO
3) comparator
4) frequency synthesizer
Question Skipped
Question #46
__________ is also an active filter
Options
1) RC filter
2) notch filter
3) butterworth filter
4) band pass filter
Question Skipped
Question #47
In 8085 microprocessor ------is the highest priority interupt
Options
1) INTR
2) RST5.5
3) RST
4) trap
Question Skipped
Question #48
In the standard TTL the totem pole stage refers to
Options
1) the multi emitter I/p stage
2) phase splitter
3) o/p buffer
4) open collector o/p stage
Question Skipped
Question #49
Decimal equivalent of hex no E5 is
Options
1) 279
2) 229
3) 427
4) 3000
Question Skipped
Question #50
Crossover distortion does not occur in __________ amplifiers.
Options
1) push-pull
2) class-A
3) class-B
4) class-AB
Question Skipped

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