BLOCK -1
ITI Trade Electronic Mechanic Important Question with Answ
ट्रेड थ्योरी आईटीआई क्वेश्चन पेपर
ITI Trade Electronic Mechanic Important Question with Answ
ट्रेड थ्योरी आईटीआई क्वेश्चन पेपर
2.Network congestion occurs
A). None of these
B). In case of traffic overloading
C). When a system terminates
D). When connection between two nodes terminates
A). None of these
B). In case of traffic overloading
C). When a system terminates
D). When connection between two nodes terminates
3.When the USB is connected to a system, its root hub is connected to the _________.
A). SCSI BUS / SCSI
B). Processor Bus
C). IDE
D). PCI Bus
A). SCSI BUS / SCSI
B). Processor Bus
C). IDE
D). PCI Bus
4.A module in a solar panel refers to
A). Parallel arrangement of solar cells
B). None of these
C). Series arrangement of solar cells
D). Series and parallel arrangement of solar cells
A). Parallel arrangement of solar cells
B). None of these
C). Series arrangement of solar cells
D). Series and parallel arrangement of solar cells
6.A chopper
A). Converts constant voltage DC into AC and then into variable voltage DC
B). Converts constant voltage DC into variable voltage DC directly
C). Converts AC one frequency into AC of another frequency
D). Converts AC to DC
A). Converts constant voltage DC into AC and then into variable voltage DC
B). Converts constant voltage DC into variable voltage DC directly
C). Converts AC one frequency into AC of another frequency
D). Converts AC to DC
7.It is required to measure pressure using LVDT. The additional device needed is
A). Strain gauge
B). Bourden tube
C). Pitot tube
D). Rotameter
A). Strain gauge
B). Bourden tube
C). Pitot tube
D). Rotameter
8.It is required that a strain gauge has gauge factor of 100. The proper strain gauge is
A). Alloy strain gauge
B). Semiconductor strain gauge
C). Nichrome strain gauge
D). Constantan strain gauge
A). Alloy strain gauge
B). Semiconductor strain gauge
C). Nichrome strain gauge
D). Constantan strain gauge
9.Which power amplifier can deliver maximum load power
A).Class C
B). Class AB
C). Class A
D). Class B
A).Class C
B). Class AB
C). Class A
D). Class B
10.Secondary storage memory type is
A). Backup memory
B). Impact memory
C). Non volatile memory
D). Volatile memory
A). Backup memory
B). Impact memory
C). Non volatile memory
D). Volatile memory
11.An AND gate has two inputs A and B and one inhibit input 3, output is 1 if
A). A=1,B=0,S=0
B). A=1,B=0,S=1
C). A=1,B=1,S=1
D). A=1,B=1,S=0
A). A=1,B=0,S=0
B). A=1,B=0,S=1
C). A=1,B=1,S=1
D). A=1,B=1,S=0
13.Word ‘RAM’ Stands for
A). Random access memory
B). Random arithmetic memory
C). Read arithmetic memory
D). Read access memory
A). Random access memory
B). Random arithmetic memory
C). Read arithmetic memory
D). Read access memory
14.Physical layer provides
A). Specification for IR over optical fiber
B). Electrical specification of transmission line signal level
C). All of these
D). Mechanical specifications of electrical connectors and cables
A). Specification for IR over optical fiber
B). Electrical specification of transmission line signal level
C). All of these
D). Mechanical specifications of electrical connectors and cables
16.The commands will move the value at port 3 to register 2
A). MOV P2, R3
B). MOV R2, P3
C). MOV R2, P3
D). MOV 3P, R2
A). MOV P2, R3
B). MOV R2, P3
C). MOV R2, P3
D). MOV 3P, R2
17.The composition of soft solder is
A). Lead-37%, Tin-63%
B). Lead-63%, Tin-37
C). Lead-50%, Tin-50%
D). Lead-70%, Tin-30%
A). Lead-37%, Tin-63%
B). Lead-63%, Tin-37
C). Lead-50%, Tin-50%
D). Lead-70%, Tin-30%
18.There or more devices share a link in _______ connection.
A). Unipoint
B). None of these
C). Multipoint
D). Point to point
A). Unipoint
B). None of these
C). Multipoint
D). Point to point
19.A CB amplifier has re = 6Ω, RL =600Ω and a=0.98. The voltage gain is
A). 600×0.98
B). 100
C). 98
D). 6
A). 600×0.98
B). 100
C). 98
D). 6
20.In a parallel inverter
A). The commuting capacitor C is across the primary of transformer and the load is across the secondary
B). The commutating capacitor and load are connected across the secondary of transformer
C). The commutating capacitor C and load are connected in series and the combination is across the secondary of transformer
D). None of these
A). The commuting capacitor C is across the primary of transformer and the load is across the secondary
B). The commutating capacitor and load are connected across the secondary of transformer
C). The commutating capacitor C and load are connected in series and the combination is across the secondary of transformer
D). None of these
22.Transmission media has the highest transmission speed in a network is
A). Twisted pair cable
B). Electrical cable
C). Coaxial cable
D). Optical fiber
A). Twisted pair cable
B). Electrical cable
C). Coaxial cable
D). Optical fiber
23.USB is a device used to store data and it stands for
A). Universal Serial Bus
B). Universal Service Bus
C). Unlimited Service Band
D). Unlimited Serial Bus
A). Universal Serial Bus
B). Universal Service Bus
C). Unlimited Service Band
D). Unlimited Serial Bus
24.In 8051 the I/O ports that are used as address and data for external memory are
A). Ports 0 and 3
B). Ports 0 and 2
C). Ports 1 and 2
D). Ports 1 and 3
A). Ports 0 and 3
B). Ports 0 and 2
C). Ports 1 and 2
D). Ports 1 and 3
25.In soldering the melting point of filler metal is
A). Below 520°C
B). Below 420°C
C). Above 420°C
D). Above 520°C
A). Below 520°C
B). Below 420°C
C). Above 420°C
D). Above 520°C
Ans- C .Above 420°C
26.A high frequency series inverter consists of
A). A number of series inverters in series
B). A number of series inverters in parallel
C).A number of parallel inverters in series
D). A number of parallel inverters in parallel
Ans- B .A number of series inverters in parallel
27. Photovoltaic solar energy conversion system makes use of
A). Fuel cell
B). None of these
C). Solar cell
D). Solar pond
Ans- C .Solar cell
28.The basic storage element in a digital system is
A). Encoder
B). Flip flop
C). Counter
D). Multiplexer
Ans- B .Flip flop
29.Ethernet frame consists of
A). MAC address
B). None of these
C).All of these
D). IP address
Ans- A .MAC address
30.The number of digits in octal system is
A). 9
B). 7
C). 10
D). 8
Ans- D .8
31.The resolution of an n bit DAC with a maximum input of 5V is 5mV. The value of n is
A). 11
B). 9
C). 10
D). 8
Answer –10
32.In pulse width modulation of chopper
A). Both of these
B). Ton is kept constant T is varied
C). Either T or Ton is varied
D). T is kept constant and Ton is varied
Ans- D .T is kept constant and Ton is varied
33.In a BJT circuit a pnp transistor is replaced by npn transistor. To analyses the new circuit
A). Replace all calculated voltage and currents by reverse values
B). Replace all calculated voltages by reverse values
C). Replace all calculated currents by reverse values
D). All calculations done earlier have to be repeated
Ans- A .Replace all calculated voltage and currents by reverse values
34.A 12 bit ADC is used to convert analog voltage of 0 to 10V into digital. The resolution is
A). 24.4mV
B). None of these
C). 2.44mV
D). 1.2mV
Ans- C .2.44mV
35.The maximum possible output of a solar array is
A). 100W / m²
B).250W / m²
C). 500W / m²
D). 300W / m²
Ans- B .250W / m²
36.Devices that accept data from outside computer and transfer into CPU are called
A). Input devices
B). Analogue devices
C). Digital devices
D). Truth table peripherals
Ans- A .Input devices
37.For a system to work, as oscillator the total phase shift of the loop gain must be equal to
A). 360°
B). 90°
C). 45°
D). 270°
Ans- A .360°
38.Operating system is
A). Collection of programs that manages hardware resources
B). Link to interface the hardware and application programs
C). All of these
D). System service provider to the application programs
Ans- C .All of these
39.Microcontrollers often have
A). All of these
B). ROM
C). CPUs
D). RAM
Ans- A .All of these
40.Which of the following signal control the flow of data
A). DTR
B). RTS
C). Both of these
D). None of these
Ans- B . RTS
41.The type of active transducer is
A). Photoelectric
B). Photovoltaic
C). Photoconductive
D). Photo emissive
Ans- B .Photovoltaic
42.The self bias provides
A). High input impedance
B). High base current
C). Large voltage gain
D). Stable Q point
Ans- D .Stable Q point
43.Most common unshielded twisted pair connector is
A). RG-59
B). RG-45
C). RG-II
D). RG-58
Ans- B .RG-45
44.Connector that is used for connecting cable to networking devices is called
A). Subscriber channel (SC)
B). MT-RJ
C). Straight-Tip (ST)
D). None of these
Ans- C .Straight-Tip (ST)
45.Current chopping leads to
A). Over voltage
B). Over current
C). Either of these
D). Both of these
Ans- A .Over voltage
46.The advantage of register indirect addressing mode
A). It makes use of operator
B). It makes uses of registers R0 and R1
C). It is easy
D). It uses the data dynamically
Ans- D .It uses the data dynamically
47.The 8051 can handle ________ interrupt sources.
A). 5
B). 4
C). 3
D). 6
Ans- A .5
48.The 8051 has _________16 bit counter/times.
A). 5
B). 4
C). 3
D). 2
Ans- D .2
49.The following oscillators is suitable for frequencies in the range of mega hertz
A). RC phase shift
B). Wien bridge
C). Hartley
D). All of these
Ans- C .Hartley
50.The first network is
A). ARPANET
B). NSFNET
C). ASAPNET
D). CNNETAns- A .ARPANET
26.A high frequency series inverter consists of
A). A number of series inverters in series
B). A number of series inverters in parallel
C).A number of parallel inverters in series
D). A number of parallel inverters in parallel
Ans- B .A number of series inverters in parallel
27. Photovoltaic solar energy conversion system makes use of
A). Fuel cell
B). None of these
C). Solar cell
D). Solar pond
Ans- C .Solar cell
28.The basic storage element in a digital system is
A). Encoder
B). Flip flop
C). Counter
D). Multiplexer
Ans- B .Flip flop
29.Ethernet frame consists of
A). MAC address
B). None of these
C).All of these
D). IP address
Ans- A .MAC address
30.The number of digits in octal system is
A). 9
B). 7
C). 10
D). 8
Ans- D .8
31.The resolution of an n bit DAC with a maximum input of 5V is 5mV. The value of n is
A). 11
B). 9
C). 10
D). 8
Answer –10
32.In pulse width modulation of chopper
A). Both of these
B). Ton is kept constant T is varied
C). Either T or Ton is varied
D). T is kept constant and Ton is varied
Ans- D .T is kept constant and Ton is varied
33.In a BJT circuit a pnp transistor is replaced by npn transistor. To analyses the new circuit
A). Replace all calculated voltage and currents by reverse values
B). Replace all calculated voltages by reverse values
C). Replace all calculated currents by reverse values
D). All calculations done earlier have to be repeated
Ans- A .Replace all calculated voltage and currents by reverse values
34.A 12 bit ADC is used to convert analog voltage of 0 to 10V into digital. The resolution is
A). 24.4mV
B). None of these
C). 2.44mV
D). 1.2mV
Ans- C .2.44mV
35.The maximum possible output of a solar array is
A). 100W / m²
B).250W / m²
C). 500W / m²
D). 300W / m²
Ans- B .250W / m²
36.Devices that accept data from outside computer and transfer into CPU are called
A). Input devices
B). Analogue devices
C). Digital devices
D). Truth table peripherals
Ans- A .Input devices
37.For a system to work, as oscillator the total phase shift of the loop gain must be equal to
A). 360°
B). 90°
C). 45°
D). 270°
Ans- A .360°
38.Operating system is
A). Collection of programs that manages hardware resources
B). Link to interface the hardware and application programs
C). All of these
D). System service provider to the application programs
Ans- C .All of these
39.Microcontrollers often have
A). All of these
B). ROM
C). CPUs
D). RAM
Ans- A .All of these
40.Which of the following signal control the flow of data
A). DTR
B). RTS
C). Both of these
D). None of these
Ans- B . RTS
41.The type of active transducer is
A). Photoelectric
B). Photovoltaic
C). Photoconductive
D). Photo emissive
Ans- B .Photovoltaic
42.The self bias provides
A). High input impedance
B). High base current
C). Large voltage gain
D). Stable Q point
Ans- D .Stable Q point
43.Most common unshielded twisted pair connector is
A). RG-59
B). RG-45
C). RG-II
D). RG-58
Ans- B .RG-45
44.Connector that is used for connecting cable to networking devices is called
A). Subscriber channel (SC)
B). MT-RJ
C). Straight-Tip (ST)
D). None of these
Ans- C .Straight-Tip (ST)
45.Current chopping leads to
A). Over voltage
B). Over current
C). Either of these
D). Both of these
Ans- A .Over voltage
46.The advantage of register indirect addressing mode
A). It makes use of operator
B). It makes uses of registers R0 and R1
C). It is easy
D). It uses the data dynamically
Ans- D .It uses the data dynamically
47.The 8051 can handle ________ interrupt sources.
A). 5
B). 4
C). 3
D). 6
Ans- A .5
48.The 8051 has _________16 bit counter/times.
A). 5
B). 4
C). 3
D). 2
Ans- D .2
49.The following oscillators is suitable for frequencies in the range of mega hertz
A). RC phase shift
B). Wien bridge
C). Hartley
D). All of these
Ans- C .Hartley
50.The first network is
A). ARPANET
B). NSFNET
C). ASAPNET
D). CNNETAns- A .ARPANET
