| Post Name | Jr Instructor (Mechanic Consumer Electronic Appliances)-Industrial Training Dept |
|---|---|
| Question Paper Code | 062/2019/OL |
| Category Code | 595/2017 |
| Date of Test | 11 December 2019 |
| Medium of Question | ENGLISH |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
The capacity of a battery is expressed in
Answer
B. Ampere-hour
2
Speed of a universal motor is
Answer
C. Independent of frequency of supply
3
A cylindrical wire one meter in length has a resistance of 100Ī©. What would be the resistance of wire made from the same material if both the length and cross-sectional area are doubled?
Answer
C. 100 ohm
4
Semi conductor have _____ temperature Co-eļ¬cient
Answer
C. Negative
5
Power factor of a R-L-C parallel circuit is
Answer
D. Unity
6
_____ damping method is common in moving coil instrument
Answer
A. Eddy current
7
An auto-transformer consists of 200 turns. Winding is connected to 200V AC supply main for getting 24V output. The winding should be tapped at _____ turns number
Answer
B. 24
8
a six pole induction motor is connected to 50 c/s supply. It is running at 970 rpm. Find the percentage of slip
Answer
D. 3%
9
The material used for fuse must have
Answer
A. Low melting point and high speciļ¬c resistance
10
In an inductive circuit, the inductance of 0.02 Henry is connected to 200 V, 50 c/s supply. Inductive reactance is
Answer
C. 6.28 Ī©
11
Processing of data in computers is done under the control of sets of instructions, is termed as _____
Answer
C. Programs
12
In Windows, Resetting of system date and time can be done using
Answer
A. Control Panel
13
To install new font the sequence of command is
Answer
Question Cancelled
14
_____ is a secondary Storage Device
Answer
D. All these
15
Which printer cable use male DB-25 connecter to connect with a computer
Answer
C. Parallel
16
Which device use friction feed mechanism to load paper into the print assembly?
Answer
A. Laser Printer 3 of 13
17
Which of the following command is used in Ms Word to open "ļ¬nd and replace" dialogue box with activating "go to tab" is
Answer
C. Ctrl + G
18
In Ms Word pressing F8 three times selects _____
Answer
D. Sentence
19
In excel, a function inside another function is called _____
Answer
B. Nested
20
_____ function is used in Excel to ļ¬nd the largest number in a series of numbers
Answer
D. Max
21
In a conductor the resistance changes with _____
Answer
B. Temperature
22
The letter C is the symbol for _____
Answer
B. Capacitance
23
An ideal volt meter is connecting to a 200 V supply having internal resistance of 10 ohms. What will be the reading of the volt meter
Answer
C. Exact 200 Volt
24
Which of the following diode is used in detector stage of an AM receiver
Answer
A. OA 79
25
In low frequency transformers the core materials are generally soft silicon steel because
Answer
B. They are having least coercivity
26
the expected energy of electrons at absolute zero is known as
Answer
B. Fermi level energy
27
The ļ¬rst storage location of stack operation in 8051 microcontroller is
Answer
D. 08H
28
After the execution of the instruction "move A, 20H"
Answer
A. Accumulator content is the content of the memory location 20H
29
MOV A, @R0 is
Answer
C. Register indirect addressing
30
The one and only register inside the CPU holds 16 bit address of the instructions is
Answer
B. Program counter
31
After the execution of the following instructions, mov SP, #08H MOV R1, #12H MOV R4, #0F3H Push 1 Push 4 The stack pointer points to which location?
Answer
D. 0AH
32
The unit of modulation index is
Answer
A. Unitless 5 of 13
33
Whenever there is a temperature gradient in a conductive material, an e.m.f will induce and the gradient of voltage is proportional to the gradient in temperature. This is known as
Answer
B. Seebeck eļ¬ect
34
The working of OFC is based on the principle
Answer
A. Total internal reļ¬ection
35
Which value of BCD input activates all segments of the seven segment decoder IC 7447
Answer
C. 1000
36
The wavelength of 2-GHz wave is:
Answer
A. 15 cm
37
The cross talk due to the electromagnetic interferance can be eliminated by
Answer
C. Twisting the copper wires
38
The insulation thickness in conductor of a cable depend on
Answer
B. Applied voltage
39
In multi digit seven segment displays, the Ripple Blank Input and Ripple Blank Outputs are used for
Answer
D. Blank out the leading zeros and make it look more intelligent
40
A 1KVA, 12V online ups connected to a load of 500 Watts, the battery used is 100Ah, then what will be the back up time if the losses are negligible
Answer
C. 144 minutes
41
Candela is the unit for
Answer
B. Luminous intensity
42
Which of the following is not true in case of a DSO.
Answer
D. It has low input impedance which enables the conversion of ADC faster
43
Manganin is the alloy of
Answer
A. Copper, Manganese and Nickel
44
Which type of transducer is generally used in electronic weighing machines
Answer
C. Resistive
45
What will be the output when one of the Zener diode short in the zener diode peak clipper
Answer
D. The output is the peak clipped halfwave output
46
At room temperature, a silicon crystal act like
Answer
B. Insulator
47
Which of the following solid state device is fastest
Answer
C. MOSFET
48
Which of the following is not true in companding
Answer
D. Higher SnR can be achieved by uniform quantization rather than non uniform 7 of 13
49
What is the eļ¬ective band width of a two stage cascaded ampliļ¬er each having a band width of one mega hertz(1MHz)
Answer
A. 640KHz
50
What is the maximum allowable tracking error frequency in amplitude modulation
Answer
C. +/- 3 KHz
51
The 78XX series regulator Ics are commonly found in the through hole package of
Answer
B. T0 220
52
The decimal number 16 is equivalent to the hexadecimal
Answer
B. 10H
53
PWM can be generated by
Answer
C. Monostable multivibrator
54
During the counting because of noise spikes, the counter may goes to some unused state and the subsequent clock pulses may causes the counter to move from one unused state to another unused state is known as
Answer
A. Lockout
55
Which colour LEDs has the highest forward voltage drop generally
Answer
D. White
56
A half wave dipole at a frequency of 200 MHz has a length of
Answer
B. 1.5 metre
57
The thickness of PCB used for surface mount devices is
Answer
A. 0.8 mm to 1 mm
58
Which of the following is not a feature or advantage of FPGS over micro controller
Answer
D. Low cost
59
The LEDs operate in visible range, only when the semiconductor should have the band gap energy
Answer
B. Between 1.4 to 3.0eV
60
Which of the following is a photo emissive material
Answer
D. Cesium silver
61
Which of the following is a non-renewable source of energy
Answer
C. Nuclear energy
62
The electrical apparatus that provides power to load when mains power fails is known as
Answer
B. UPS
63
Which one of the following is an impact printer
Answer
A. Dot matrix
64
The maximum operating voltage of LCD panel may be
Answer
C. 1v
65
The maximum usual idagonal six of the LCD panel is
Answer
A. 160cm 9 of 13
66
The principle of LCD display is
Answer
A. Twisted pneumatic
67
In a 7 segment display system the decimal point is displayed by
Answer
C. a separate 8th bit
68
An UPS which does not require inverter is _____
Answer
C. DC power UPS
69
In a UPS the failure of AC input supply is indicated by
Answer
C. Both red light and buzzer
70
The desirable changeover period for a UPS is _____
Answer
D. 1 ms
71
Solar energy is _____ resource of energy
Answer
B. Renewable
72
A solar panel is usually designed to generate _____ volts DC
Answer
D. 12-20 V
73
Which device is used in remote control operated electronic equipment to work as an acceptor for the remote signal
Answer
B. Photo diode
74
The overall thickness of a LED is abaout
Answer
B. 2.5 cm
75
A LCD panel is not a self illuminated panel. For illuminating this panel _____ are used as backlight devices
Answer
C. CCFL
76
The contract ratio for the LED TV is deļ¬ned as
Answer
B. The diļ¬erence b/w most bright and most dark portions
77
LCD/LED display panel are usually made in
Answer
D. 6 cm to 160 cm
78
semi automatic washing machine consist of 2 tubs one is wash tub and the other is
Answer
A. Spin tub
79
Generally the HP of motor used in a washing machine is
Answer
B. 0.3 to 0.5 HP
80
A microwave oven works on _____ frequency
Answer
B. 2.45GHz
81
A vacuum cleaner cleans carpets etc on the principle of
Answer
B. Suction
82
A vacuum cleaner does not run but gives buzzing sound when the defect lies in its
Answer
C. Armature winding
83
A mixer grinder grinds food grains by employing
Answer
B. High speed spinning blade
84
The testing of a mixer grinder is called _____
Answer
A. Inching
85
KU band used for satellite communication is _____
Answer
B. 10.7 to 19.7 GHz
86
Frequency band referred as 6/4 GHz is named as
Answer
B. C band
87
A dish antennae used in DTH service consist of a paraboloid reļ¬ector of about ____ diameter
Answer
C. 45 cm to 90 cm
88
LNB stands for
Answer
B. Low noise block
89
The set top receivers output lies in the frequency band of
Answer
D. 900 to 1400 MHz
90
A transponder is a _____
Answer
C. Frequency channel used by a satellite station
91
A CCTV security system installed in border areas for day and night watch contains a _____ CCTV camera
Answer
A. Infrared
92
The output of a CCTV camera should be
Answer
B. 1.0 V P-P
93
The smallest size CCTV camera is
Answer
B. Bullet type
94
In DTH system a _____ is necessary in addition to dish antennae and cable etc
Answer
C. Set top receiver
95
For watching intruders during totally dark time a CCTV camera is associated with
Answer
D. IR LED
96
Magnetron is an / a _____
Answer
B. Oscillator
97
Induction heating is a type of _____ heating
Answer
B. High frequency
98
Forced commutations requires
Answer
B. A pre charged capacitor
99
Which part of microwave oven generates micro waves
Answer
B. Magnetron
100
Application of cycloconverters include
Answer
D. All of the mentioned
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