* Answer Key given at the page bottom
1. How does light normally travel?
A) In concentric circles B) In a straight line
C) Always towards a dark area D) In a curved line
2. First Country to undergo industrial revolution:
A) France B) Britain C) Germany D) USA
3. A solar water heater can not be used to get hot water on
A) A sunny day B) A cloudy day C) A hot day D) A windy day
4. In India, the first cotton mill was set up in
A) Madras B) Bombay C) Kanpur D) Surat
5. Regur soil is the other name of
A) Black soil B) Alluvial soil C) Arid soil D) Laterite soil
6. The different group of stars is known as
A) Constellations B) Celestial bodies C) Asteroids D) Comet
7. Which country has two-party system?
A) India B) Sri Lanka C) United Kingdom D) Nepal
8. Which of the following is a macro nutrient?
A) Mn B) Mg C) Cu D) Zn
9. The process of evaporation causes
A) Cooling B) Heating C) Dryness D) None of these
10. Place directly above focus on Earth’s surface is known as
A) Strike B) Comma C) Epicenter D) Origin
11. HCF of 84 & 270 is
A) 8 B) 6 C) 4 D) 2
12. The sum of first five multiples of 3 is:
A) 45 B) 65 C) 75 D) 90
13. 7:12 is equivalent to:
A) 28 : 40 B) 42 : 71 C) 72 : 42 D) 42 : 72
14. Find the simple interest on the Rs. 2000 at 25/4% per annum for the period from 4th Feb 2005 to 18th April 2005
A) Rs. 35 B) Rs. 30 C) Rs. 25 D) Rs. 40
15. The average of 20 numbers is Zero. Of them, at the most, how many may be greater than zero?
A) 0 B) 1 C) 10 D) 19
16. An athlete runs 200 meters in 24 seconds. His speed is?
A) 10 km/hr B) 17 km/hr C) 27 km/hr D) 30 km/hr
17. Every rational number is
A) A natural number B) An integer C) A real number D) A whole number
18. What decimal of an hour is a second?
A) .0025 B) .0256 C) .00027 D) .000126
19. A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had how many ?
A) 588 apples B) 600 apples C) 672 apples D) 700 apples
20. A does a work in 10 days and B does the same work in 15 days. In how many days they will do the same work together?
A) 5 days B) 6 days C) 7 days D) 8 days
21. A Resistor of 3 K ohm is connected in parallel with another Resistor of 6 k Ohm and the combination then added to another 1 K ohm Resistor. The whole combination is connected to a 3 Volt Battery. The current through the main circuit will be
A) 2 Amp B) 1 Amp C) 2.5 Amp D) Cannot be calculated
22. The sum of Currents flowing into any junction of an electrical circuit, is equal to the sum of currents flowing out of that junction is
A) Ohm’s Law B) Kirchoffof’s Law C) Boyle’s Law D) Faraday’s Law
23. Peak value of a sinusoidal signal is X times the R M S Value where X is
A) Square Root of 2 B) 0.707 C) 1.732 D) 3.14
24. A car runs with an uniform velocity of 80 Km per hour. Another car starts at the same point after 20 min .and runs with a velocity of 120 km per hour. At what distance from the starting point the second car will cross the first one?
A) 80 km B) 60 km C) 40 km D) 20 km
25. The most ductile metal is
A) Aluminium B) Gold C) Copper D) Silver
26. Metal reacting readily with cold water
A) Gold B) Silver C) Sodium D) Magnesium
27. Which of the following metal is extracted only by electrolysis
A) Zinc B) Aluminium C) Iron D) Copper
28. In a lead acid battery the sp gr of acid falls due to formation of
A) Water B) Acid C) Ion D) Electron
29. An Ethernet is a —— that links computer to the internet.
A) Switch B) cable C) data D) net
30. A transmitter works at 156 mhz it is said to
A) VHF Tx B) UHF Tx C) HF Tx D) MF Tx
31. Kolkata trams operate on
A) 230 volt ac B) 415 v ac C) 550 v dc D) 220 v dc
32. In India, Electric trains runs on …. Volt 50 hz AC Traction overhead line
A) 25000 B) 11000 C) 15000 D) 2200
33. Two cars start two cities 120 Km apart with same velocity (in opposite direction) at the same time and meets at the mid distance. If the first car increased it’s velocity initially by 10 % , how much after the mid distance it will meet the second car than before?
A) 2 km B) 3 km
C) 6 km D) can’t be calculated from the given data
34. Tick the odd out : 8051 micro computer contains
A) 8 Bit ALU B) 8 Bit Register
C) 16 Bit Data Bus D) 2x16 Bit address bus /program counter.
35. ALU is a digital electronic circuit which is
A) Arithmetic Logic Unit B) Analog Leader Unit C) Arithmetic Logging Unit D) Analog Legal Unit.
36. An amplifier that used for performing mathematical operations on an input voltage is known as
A) Operational Amplifier B) Logic Controller C) Register D) ALU
37. Gain of an op amp is usually
A) High B) Low C) Medium D) Unity
38. Tick the odd out for an Op Amp
A) Input is differential B) Very High Input Impedance
C) Input current=0 D) It is not an Amplifier
39. which one is a common Op amp
A) 555 B) 556 C) 741 D) 8051
40. There are how many types of Multi vibrators ?
A) 1 B) 2 C) 3 D) 4
41. In a flip flop ckt. Frequency of oscillation is 1 Mhz. If Pulse duration is 0.3 micro seC) Find the duty cycle in %
A) 30% B) 20% C) 15% D) 10%
42. The unit digital information “ One byte “ equals to
A) 8 bits B) 16 bits C) 32 bits D) 64 bits
43. DDR of a RAM represents
A) Double Data Rate B) Differential Derivative Register
C) Differential Data Rate D) Double Deal Rate
44. In TV Transmission, intermediate frequency in india
A) 10.7 mhz B) 5.5 MHZ C) 455 KHZ D) 6.2 MHZ
45. By using twisted pair cable in an audio line what parameter can be improved ?
A) Amplitude B) Frequency C) Distortion D) Phase balance
46. Magnetic permeability is measured in
A) Henries in mtr B) coulomb per cm C) farad per mtr D) amp per sec
47. Inverse Henry is the unit of
A) magnetic reluctance. B) magnetic susceptibility C) magnetic moment D) Electromagnetic flux
48. In a Bridge Full Wave Rectifier a smoothing capacitor is added to
A) increase its average DC output voltage level B) to transmit current
C) to reduce voltage D) to eliminate dc voltage
49. Unit of capacitance of a capacitor in electronic circuit is
A) Ohm B) farad C) Henry D) Watt
50. MOSFET is having following nos of terminals:
A) 2 B) 3 C) 4 D) 5
51. Nut Cracker is a ….. lever
A) Class 1 B) Class 2 C) Class 3 D) Not a lever
52. One 100 Watt Fan if runs 10 hours in summer days will consume how much units in a 30 days month?
A) 30 B) 45 C) 25 D) 65
53. A garden has length of 10 Mtr and Width 15 Mtr . there is an outside road of 2 mtr wide along the periphery of the garden.
A) 45 Sq Mtr B) 56 Sq Mtr C) 63 Sq Mtr D) 116 Sqr Mtr
54. A cylinder has height of 2 mtr. And base area of 9 Sq Mtr. With 50 % filled condition it will accommodate how much cc of petrol?
A) 18x 10^6 cc B) 9 x 10^6 cc C) 15x 10^6 cc D) 12x 10^6 cc
55. One 3 k ohm, one 6 k ohm and one 12 k ohm resistors are connected in parallel and 9 volt battery connected across it. Find the minimum branch current.
A) 2 ma B) 3 ma C) 0.75 ma D) 6 ma
56. Which parameter”s unit is S I system is PASCAL?
A) Work B) Pressure C) Energy D) Displacement
57. In a 555 Timer IC , Output will be obtained from Pin ?
A) 1 B) 2 C) 3 D) 5
58. One 130 kw D G Set when operates at 380 volt 1 phase 50 hz generate how much line current ?
A) 225 Amp B) 237 Amp C) 246.90 Amp D) 325 Amp
59. For a 4 pole Synchronous Motor operating at 50 Hz , how much will be the operating speed in RPM ?
A) 1500 B) 500 C) 50 D) 25
60. In a phase shift oscillator circuit, 450 Khz was produced using two stages… Calculate the Resistor required to generate 450 Khz with a 1 micro farad capacitor.
A) 100 milli ohm B) 177 milli ohm C) 3.14 ohm D) 10 k ohm
61. One L C Osillator circuit with one 1 milli henry inductor and 1 micro farad capacitor will generate what frequency
A) 4.824 khz B) 48.24 hz C) 482.4 hz D) 0.04824 mhz
62. Transformer in an electrical ckt. works as per the theory of
A) Static Electricity B) Magnetism
C) Electromagnetic Induction D) Electro optics
63. Tick the ODD item which does work as per Faraday’s law of Induction
A) Electrical Motor B) Generator C) Transformer D) Capacitor
64. By the procedure, which type of Modulation is different
A) AM B) FM C) SSB D) QAM
65. Which is not a source of DC supply
A) Cell B) Battery C) Alternator D) Dynamo
66. Newton is measurement unit of
A) Force B) Pull C) Weight D) Stress
67. Unit of Co-efficient of Friction is
A) KG/SQ CM B) Newton C) NO Unit D) Mtr/ sec
68. What is CGS unit of Heat Energy
A) Joule B) Calorie C) Erg D) Watt
69. In an Electronic Circuit, working as Oscillator, the feedback loop provides
A) Positive Feed back B) No feedback C) Negative feedback D) Distorted Feedback.
70. The 555 IC is a very popular integrated Circuit which is not used as
A) Timer B) Pulse Generator C) Oscillator D) Amplifier
71. Your Mother is cooking in an Aluminium pan directly holding the pan . She will feel hot in hand due to what type of transmission of heat ?
A) Convection B) Conduction C) Radiation D) Evaporation
72. “Pixel “ is not related to :
A) Picture Elecment B) Mobile Photo C) Video Image D) Audio distortion
73. Two Resistors 2 K ohm and 7 K ohm are connected in parallel to a Battery of unknown voltage . The ratio of branch current through them ( former:later) will be
A) 7:2 B) 1:1 C) Can’t be calculated D) 2: 7
74. The unit of Frequency is called
A) Hertz B) Watt C) Henry D) Coulumb
75. S. I. Unit of measurement of Length is
A) cm. B) Mtr. C) Kilo Mtr D) Inch.
76. KVL is used to determine
A) Current in circuit B) Voltage in circuit C) Power in circuit D) Both A & B
77. Frequency of dc supply is
A) 50 Hz B) 60 Hz C) 400 Hz D) None of above
78. The rms value of half rectified sine wave is
A) Vmax B) 0.5 Vmax C) 0.707 Vmax D) 2 Vmax
79. What is milli henry? Unit of
A) Inductor B) Capacitor C) Conductor D) Electric Charge
80. In the areas of the study on Electro-magnetism , find the odd man
A) Michael Faraday B) James Clerk Maxwell C) George Ohm D) Heinrich Lenz
81. A battery of 9 Volt discharges through a 3 Kohm Resistor for 6 hours . How much was the accumulated charge in the Battery:
A) 12 mAH B) 18mAH
C) 24 mAH D) Cant”s be calculated from this data
82. Unit of Velocity in FPS System
A) Cm/sec B) Foot/sec C) gm/sec D) Foot/cm
83. Speed is a scalar quantity but Velocity is a vector quantity
A) False B) True C) Both scalar quantity D) Both vector quantity
84. Unit of retardation in CGS System is
A) Ft/sec B) Mtr / Hour C) cm/ Sec Sqr D) None of these
85. Specific Gravity of a substance is unit less
A) False B) True C) Both D) None of these
86. Specific Gravity of metals are more than wood and water
A) True B) False
C) More than wood but less than water D) less than wood but more than water
87. A piece of oak wood, having Sp. Gr 0.75, floats in water because that of water is having SP Gr .
A) Unity B) Wrong statement C) Sp Gr 8.33 D) Sp. Gr. 13.6
88. Most commonly used semi conducting material is
A) Germanium B) Silicon C) Carbon D) Gallium arsenide
89. The process of establishing the pre determined voltage and current of an electronic circuit is known as
A) Biasing B) Trimming C) Tuning D) Metering
90. Electrical Conductivity of Gas is usually
A) Very Low B) Very High C) Moderate D) Zero conductivity
91. Android is
A) A diode B) A mobile operating system
C) A four layer semiconductor D) A type of IC
92. A Thyristor is
A) A four layer semiconductor devise B) Is not a silicon controlled rectifier
C) A three layer devise like transistor D) A passive devise like Resistor
93. One Mechanical Horse power is equal to
A) 3.14 K Watt B) 746 Watt C) 746 Joule D) 750 Erg
94. One 3 k ohm, one 6 k ohm and one 12 k ohm resistors are connected in parallel and 12 volt battery connected across it. Find the maximum branch current.
A) 4 ma B) 3 ma C) 12 ma D) 1 ma
95. Which of the following is not an application of P-N junction diode
A) Rectification B) Clipping C) Clamping D) Voltage Regulation
96. The sum of Currents flowing into any junction of an electrical circuit, is equal to the sum of currents flowing out of that junction is
A) Ohm’s Law B) Kirchoffof’s Law C) Boyle’s Law D) Farad
97. A zener diode has reverse bios resistance in the range of
A) Few ohms B) Kilo ohms C) Mega ohms D) Infinite
98. A Circuit is formed using a Resistor and a Capacitor connected in series . The input voltage is given , and the output is taken across the Capacitor. It will work as :
A) Low Pass Filter B) Band Pass Filter C) High Pass Filter D) Notch Filter
99. In a First Class Lever , the Mid Point is known as
A) Pivot B) Fulcrum C) Centroid D) Orbit
100. Avalanche Break down is not related to :
A) Semiconductor B) Insulator C) Huge Current flow D) Breaking into parts
