Question: What does AM mean?
1) Angelo marconi 2) Anno median 3) Amplitude modulation 4) Amperes
Question: What frequency range is the High Frequency band?
1) 100 kHz 2) 1 GHz 3) 30 to 300 MHz 4) 3 to 30 MHz
Question: What frequency range is the High Frequency band?
1) 100 kHz 2) 1 GHz 3) 30 to 300 MHz 4) 3 to 30 MHz
Question: What does EPROM stand for?
1) Electric Programmable Read Only Memory
2) Erasable Programmable Read Only Memory
3) Evaluable Philotic Random Optic Memory
4) Every Person Requires One Mind
Question: What does the term PLC stand for?
1) Programmable Lift Computer 2) Program List Control
3) Programmable Logic Controller 4) Piezo Lamp Connector
Question: Which motor is NOT suitable for use as a DC machine?
1) Permanent magnet motor 2) Series motor
3) Squirrel cage motor 4) Synchronous motor
Question: What does VVVF stand for?
1) Variant Voltage Vile Frequency 2) Variable Velocity Variable Fun
3) Very Very Vicious Frequency 4) Variable Voltage Variable Frequency
Question: The sampling rate, (how many samples per second are stored) for a CD is...?
1) 48.4 kHz 2) 22,050 Hz 3) 44.1 kHz 4) 48 kHz
Question: Compact discs, (according to the original CD specifications) hold how many minutes of music?
1) 74 mins 2) 56 mins 3) 60 mins 4) 90 mins
Question: Sometimes computers and cash registers in a foodmart are connected to a UPS system. What does UPS mean?
1) United Parcel Service 2) Uniform Product Support
3) Under Paneling Storage 4) Uninterruptable Power Supply
Question: What does AC and DC stand for in the electrical field?
1) Alternating Current and Direct Current 2) A Rock Band from Australia
3) Average Current and Discharged Capacitor 4) Atlantic City and District of Columbia
Question: Which consists of two plates separated by a dielectric and can store a charge?
1) Inductor 2) Capacitor 3) Transistor 4) Relay
Question: Made from a variety of materials, such as carbon, which inhibits the flow of current...?
1) Choke 2) Inductor 3) Resistor 4) Capacitor
Question: The FFT, a mathematical process, is used extensively in digital signal processing (DSP). For what word does the second "F" in FFT stand?
1) Fast 2) Fourier 3) Ford 4) Footed
Question: Which is a type of Electrically-Erasable Programmable Read-Only Memory?
1) Flash 2) Flange 3) Fury 4) FRAM
Question: A given signal's second harmonic is twice the given signal's __________ frequency...?
1) Fourier 2) Foundation 3) Fundamental 4) Field
Question: Voltage is sometimes referred to as EMF, or Electromotive...?
1) Field 2) Factor 3) Flash 4) Force
Question: "FET" is a type of transistor, Its full name is ________ Effect Transistor...?
1) Field 2) Factor 3) Flash 4) Force
Question: When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
1) Fundamental 2) Fall 3) Force 4) Figure
Question: The average power (in watts) used by a 20 to 25 inch home color television is...?
1) 70-100 2) 25-50 3) 500-800 4) Over 1000
Question: The most common format for a home video recorder is VHS. VHS stands for...?
1) Video Home System 2) Very high speed
3) Video horizontal standard 4) Voltage house standard
Question: If the picture is stretched or distorted up and down like a fun house mirror the circuit to adjust or repair is...?
1) Vertical 2) Tuning 3) Horizontal 4) Filament
Question: The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...?
1) Transformer 2) Yoke 3) Capacitor 4) Diode
Question: The input used by an antenna or cable to a TV set uses frequencies called...?
1) IF 2) RF 3) AF 4) SAP
Question: The transformer that develops the high voltage in a home television is commonly called a...?
1) Tesla coil 2) Flyback 3) Yoke 4) Van de Graaf
Question: Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
1) Sound 2) Remote control 3) Color balance 4) High voltage
Question: In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about...?
1) 500 volts 2) 5 thousand volts 3) 25 thousand volts 4) 100 thousand volts
Question: The NTSC (National Television Standards Committee) is also used in the country of...?
1) Japan 2) France 3) Germany 4) England
Question: In the United States the television broadcast standard is...?
1) PAL 2) NTSC 3) SECAM 4) RGB
Question: Which is NOT an acceptable method of distributing small power outlets throughout an open plan office area?
1) Power Poles 2) Power Skirting 3) Flush Floor Ducting 4) Extension Cords
Question: Which of the following is an international protocol for lighting control?
1) Lite-con 2) DALI 3) IPLC 4) Prolicon
Question: In the UK, what type of installation requires a fireman's switch?
1) Neon Lighting 2) High Pressure Sodium Lighting
3) Water Features 4) Hotel Rooms
Question: What will a UPS be used for in a building?
1) To provide power to essential equipment 2) To monitor building electricity use
3) To carry messages between departments 4) To control lighting and power systems
Question: Larger buildings may be supplied with a medium voltage electricity supply, and will required a substation or mini-sub. What is the main item of equipment contained in these?
1) Transformer 2) Transponder 3) Transducer 4) Converter
Question: What is the relationship between resistivity r and conductivity s?
1) R = s2 2) R = s 3) R > s 4) R = 1/s
Q. Power diode is generally made from
a) Silicon
b) Germanium
c) Both
d) None of these
Q. When the both junction of NPN diode is reverse biased, then the diode is in which mode
a) Active
b) Cutoff
c) Saturation
d) inverted
Q. Which transistor mode gives the inverted output
a) Common Emitter
b) Common Base
c) Common Collector
d) None of these
Q. Which coupling gives the higher gain in case of amplifier
a) Capacitor coupling
b) Impedance coupling
c) Transformercoupling
Q. Which distortion is least objectionable in audio amplification
a) Phase
b) Frequency
c) Harmonic
d) Intermediation
Q. A narrow band amplifier has a band pass nearly…………of central frequency
a) 33.3%
b) 10%
c) 50%
Q. Phase shift oscillator consists
a) RL
b) RC
c) RLC
Q. Multivibrater Produces
a) Sine wave
b) Square wave
c) Smooth wave
d) sawtooth
Q. Convert the 101101 Binary number into octal no
a) 65
b) 55
c) 51
d) 45
Ans: 55
Q. 10 in BCD
a) 10100
b) 1100
c) 010111
d) None of these
Ans: None of these
Q. Which PNP device has a terminal for synchronizing purpose
a) SCS
b) Triac
c) Diac
d) SUS
Q. Addition of indium in semiconductor crystal makes
a) PNP
b) NPN
Q. Free electron exists in which band
a) 1
b) 2
c) 3
d) Conduction band
Q. Ripple factor of half wave rectifier
a) 1.21
b) 0.48
c) 0.5
Q. Transistor that can be used in enhancement mode
a) NPN
b) UJT
c) JFET
d) MOSFET
Q. Following contributes to harmonic distortion in Amplifier
a) +Ve feedback
b) –Ve feedback
c) Defective active device
Q. High cutoff frequency
a) CB
b) CC
c) CE
Q. Which is used as data selector?
a) Encoder
b) Decoder
c) modulator
d) Demodulator
Q. Read write capable memory
a) RAM
b) ROM
c) Both
d) None of these
Q.the radix or base of hexadecimal number system is -----------
a) 8
b) 16
c) 5
d) none of these
Ans: 16
Q.the no of 1’s in the binary representation of the expression 162*9+162*7+16*5+3 are
a) 10
b) 23
c) 6
d) 4
Q. the no of latches in F/F are -------
a) 1
b) 2
c) 3
d) 4
Q.how many flip-flops are required to construct Mod -12 counter
a) 5
b) 4
c) 12
d) none
Ans: 4
Q. which logic gate has the output is compliment of its input ----------
a) OR
b) AND
c) NOT
d) X-OR
Ans: NOT
Q.no.of 2-input multiplexers needed to construct a 210 input multiplexer…….
a) 12
b) 31
c) 20
d) 16
Q.By adding inverters to the inputs and output of a AND gate we can obtain ……………
a) OR
b) AND
c) NOT
d) X-OR
Ans: X-OR
Q.how many NAND gates are needed to realize OR gate --------------
a) 1
b) 2
c) 3
d) 4
Ans: 3
Q.which is the first integrated logic family ---------------
a) RTL
b) DTL
c) TTL
d) none of these
Q. Which logic gate has output high if and only if all inputs are low ---------?
a) NOR
b) NAND
c) X-NOR
d) AND
Ans: NAND
Q.According to Boolean algebra 1+A+B+C =
a) A
b) A+B+C
c) 1
d) none of these
Ans: 1
Q. If a=0x6db7 and b=0x2ae9 then what is the value of a”b--------------
a) binary number for 1001.1101?
b) decimal number for 19?
c) excess-3 code for 29?
Q.what is the value of A'+1 ?
a) A
b) A'
c) 1
d) none of these
Ans: 1
Q.2 in 4 bit number one bit indicates sign of the number then the locations are from
a) -8 to 8
b) -7 to 7
c) -16 to 16
d) None
Q.Avalanche photo diode is used when compared to PIN diode bcz
a)larger band width
b)high sensitivity
C)-------
d)--------
Q.some non zero DC voltage is to RC low pass circuit then the DC voltage in the output contains
a) Same as in input
b) Higher than input
c) Zero
d) Slightly increases
Q.if the output of the gate is always high then the gates applied to this logic are 0,0
a) NAND and EX-NOR
b) NAND and NOR
c) AND and X-NOR
d) OR and XOR
Ans:a
Q.Thermal Run away is not possible in FET bcz the flow of
a)minority careers
b)Transconductance
c)_____
d)none
Ans : minority careers
Q.which of the following is/are true about 1's and 2's compements:
i)In 1's complement form. 0 has two representations
ii)in 1's complement, the magnitude of lowest number is equal to the magnitude of highest number
iii)In 2's complement, 0 has two representations
a) i only
b) i and ii
c) iii only
d) all of these
Q.In the hybrid parameter model of a transistor reverse transfer voltage ratio and forward transfer current ratio are respectively given by:
a) h11 and h21
b) h12 and h11
c) h21 and h11
d) None of these
Q.The largest negative no can be represented with 8 bits in 2's compliment representation?
a)-256
b)-255
c)-127
d)-128
Ans: -128
Q. How many NAND gates required to implement AB+CD+EF
a) 1
b) 2
c) 3
d) 4
Ans: 4
Q. Transparent latch is seen in which type of flip flop
a) SR FF
b) D FF
c) JK FF
d) D FF
Ans: D FF
Q. Odd parity generator uses which logic?
a) Digital
b) Analog
c) Sequential
d) none
Q. Which type of ADC is fastest?
a) SARC
b) Counter type
c) Intigrated type
d) Flash
ANS: Flash/Parallel
Q. Which one of the following is fastest read/writable memory?
a) PROM
b) EEPROM
c) Flash
d) none
Ans: Flash
8. In array programming which one is used
a) SISD
b) PISD
c) MISD
d) None
Q.Which one of the following has high I/p impedance
a) CC
b) CB
c) CE
d) None
Q. The maximum time allowed time for each flip flop for a mod 10 synchronous counter if each flip flop delay is 25ns.
a) 25 ns
b) 50 ns
c) 100 ns
d) none
Q. The resolution for a DAC is given by 0.4% then no. of bits of DAC is
a) 8- bits
b) 16- bits
c) 32- bits
d) none
Ans: 8- bits
41) The chip capacity is 256 bits, then the no.of chips required to build 1024 B memory Is
a) 32
b) 16
c) 15
d) 4
Q. Which of the following are correct?
1)A flip-flop is used to store 1-bit of information
2)Race around condition occurs in JK flip flop when both the inputs are 1
3)Master slave flip flop is used to store 2 bits of information
4)A transparent latch consists of a D- flip flop
a) 1,2,3
b) 1,3,4
c) 1,2,4
d) 2,3,4
Ans: 1,2,4
Q. output resistance of ideal OP AMP is
a) 0
b) 1
c) infinite
d) very high
ANS: 0
Q. CMRR of an OP AMP is given as 80db and Ad is 20000.Value of Acm will be
a) 4
b) 8
c) 2
d) 1
Ans: 2
Q.Si,Ge lie in ........block of periodic table
a) III
b) V
c) IV A
d) IV B
Ans: IV A
Q.to obtain 10 mV resolution on 5 V range how many bit DAC is to be used
a) 4
b) 8
c) 16
d) 32
Q.% resolution of a 10 bit ADC
a) 1.588%
b) 0.392%
c) 0.0978%
d) 0.0244%
Ans: 0.0978%
Q.Efficiency of half wave rectifier
a) 45%
b) 50%
c) 86%
d) 100%
Ans: 45%
a) Silicon
b) Germanium
c) Both
d) None of these
Q. When the both junction of NPN diode is reverse biased, then the diode is in which mode
a) Active
b) Cutoff
c) Saturation
d) inverted
Q. Which transistor mode gives the inverted output
a) Common Emitter
b) Common Base
c) Common Collector
d) None of these
Q. Which coupling gives the higher gain in case of amplifier
a) Capacitor coupling
b) Impedance coupling
c) Transformercoupling
Q. Which distortion is least objectionable in audio amplification
a) Phase
b) Frequency
c) Harmonic
d) Intermediation
Q. A narrow band amplifier has a band pass nearly…………of central frequency
a) 33.3%
b) 10%
c) 50%
Q. Phase shift oscillator consists
a) RL
b) RC
c) RLC
Q. Multivibrater Produces
a) Sine wave
b) Square wave
c) Smooth wave
d) sawtooth
Q. Convert the 101101 Binary number into octal no
a) 65
b) 55
c) 51
d) 45
Ans: 55
Q. 10 in BCD
a) 10100
b) 1100
c) 010111
d) None of these
Ans: None of these
Q. Which PNP device has a terminal for synchronizing purpose
a) SCS
b) Triac
c) Diac
d) SUS
Q. Addition of indium in semiconductor crystal makes
a) PNP
b) NPN
Q. Free electron exists in which band
a) 1
b) 2
c) 3
d) Conduction band
Q. Ripple factor of half wave rectifier
a) 1.21
b) 0.48
c) 0.5
Q. Transistor that can be used in enhancement mode
a) NPN
b) UJT
c) JFET
d) MOSFET
Q. Following contributes to harmonic distortion in Amplifier
a) +Ve feedback
b) –Ve feedback
c) Defective active device
Q. High cutoff frequency
a) CB
b) CC
c) CE
Q. Which is used as data selector?
a) Encoder
b) Decoder
c) modulator
d) Demodulator
Q. Read write capable memory
a) RAM
b) ROM
c) Both
d) None of these
Q.the radix or base of hexadecimal number system is -----------
a) 8
b) 16
c) 5
d) none of these
Ans: 16
Q.the no of 1’s in the binary representation of the expression 162*9+162*7+16*5+3 are
a) 10
b) 23
c) 6
d) 4
Q. the no of latches in F/F are -------
a) 1
b) 2
c) 3
d) 4
Q.how many flip-flops are required to construct Mod -12 counter
a) 5
b) 4
c) 12
d) none
Ans: 4
Q. which logic gate has the output is compliment of its input ----------
a) OR
b) AND
c) NOT
d) X-OR
Ans: NOT
Q.no.of 2-input multiplexers needed to construct a 210 input multiplexer…….
a) 12
b) 31
c) 20
d) 16
Q.By adding inverters to the inputs and output of a AND gate we can obtain ……………
a) OR
b) AND
c) NOT
d) X-OR
Ans: X-OR
Q.how many NAND gates are needed to realize OR gate --------------
a) 1
b) 2
c) 3
d) 4
Ans: 3
Q.which is the first integrated logic family ---------------
a) RTL
b) DTL
c) TTL
d) none of these
Q. Which logic gate has output high if and only if all inputs are low ---------?
a) NOR
b) NAND
c) X-NOR
d) AND
Ans: NAND
Q.According to Boolean algebra 1+A+B+C =
a) A
b) A+B+C
c) 1
d) none of these
Ans: 1
Q. If a=0x6db7 and b=0x2ae9 then what is the value of a”b--------------
a) binary number for 1001.1101?
b) decimal number for 19?
c) excess-3 code for 29?
Q.what is the value of A'+1 ?
a) A
b) A'
c) 1
d) none of these
Ans: 1
Q.2 in 4 bit number one bit indicates sign of the number then the locations are from
a) -8 to 8
b) -7 to 7
c) -16 to 16
d) None
Q.Avalanche photo diode is used when compared to PIN diode bcz
a)larger band width
b)high sensitivity
C)-------
d)--------
Q.some non zero DC voltage is to RC low pass circuit then the DC voltage in the output contains
a) Same as in input
b) Higher than input
c) Zero
d) Slightly increases
Q.if the output of the gate is always high then the gates applied to this logic are 0,0
a) NAND and EX-NOR
b) NAND and NOR
c) AND and X-NOR
d) OR and XOR
Ans:a
Q.Thermal Run away is not possible in FET bcz the flow of
a)minority careers
b)Transconductance
c)_____
d)none
Ans : minority careers
Q.which of the following is/are true about 1's and 2's compements:
i)In 1's complement form. 0 has two representations
ii)in 1's complement, the magnitude of lowest number is equal to the magnitude of highest number
iii)In 2's complement, 0 has two representations
a) i only
b) i and ii
c) iii only
d) all of these
Q.In the hybrid parameter model of a transistor reverse transfer voltage ratio and forward transfer current ratio are respectively given by:
a) h11 and h21
b) h12 and h11
c) h21 and h11
d) None of these
Q.The largest negative no can be represented with 8 bits in 2's compliment representation?
a)-256
b)-255
c)-127
d)-128
Ans: -128
Q. How many NAND gates required to implement AB+CD+EF
a) 1
b) 2
c) 3
d) 4
Ans: 4
Q. Transparent latch is seen in which type of flip flop
a) SR FF
b) D FF
c) JK FF
d) D FF
Ans: D FF
Q. Odd parity generator uses which logic?
a) Digital
b) Analog
c) Sequential
d) none
Q. Which type of ADC is fastest?
a) SARC
b) Counter type
c) Intigrated type
d) Flash
ANS: Flash/Parallel
Q. Which one of the following is fastest read/writable memory?
a) PROM
b) EEPROM
c) Flash
d) none
Ans: Flash
8. In array programming which one is used
a) SISD
b) PISD
c) MISD
d) None
Q.Which one of the following has high I/p impedance
a) CC
b) CB
c) CE
d) None
Q. The maximum time allowed time for each flip flop for a mod 10 synchronous counter if each flip flop delay is 25ns.
a) 25 ns
b) 50 ns
c) 100 ns
d) none
Q. The resolution for a DAC is given by 0.4% then no. of bits of DAC is
a) 8- bits
b) 16- bits
c) 32- bits
d) none
Ans: 8- bits
41) The chip capacity is 256 bits, then the no.of chips required to build 1024 B memory Is
a) 32
b) 16
c) 15
d) 4
Q. Which of the following are correct?
1)A flip-flop is used to store 1-bit of information
2)Race around condition occurs in JK flip flop when both the inputs are 1
3)Master slave flip flop is used to store 2 bits of information
4)A transparent latch consists of a D- flip flop
a) 1,2,3
b) 1,3,4
c) 1,2,4
d) 2,3,4
Ans: 1,2,4
Q. output resistance of ideal OP AMP is
a) 0
b) 1
c) infinite
d) very high
ANS: 0
Q. CMRR of an OP AMP is given as 80db and Ad is 20000.Value of Acm will be
a) 4
b) 8
c) 2
d) 1
Ans: 2
Q.Si,Ge lie in ........block of periodic table
a) III
b) V
c) IV A
d) IV B
Ans: IV A
Q.to obtain 10 mV resolution on 5 V range how many bit DAC is to be used
a) 4
b) 8
c) 16
d) 32
Q.% resolution of a 10 bit ADC
a) 1.588%
b) 0.392%
c) 0.0978%
d) 0.0244%
Ans: 0.0978%
Q.Efficiency of half wave rectifier
a) 45%
b) 50%
c) 86%
d) 100%
Ans: 45%
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