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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
A potentiometer may be used forOptions:(a) measurement of resistance(b) measurement of current(c) calibration of ammeter(d) All of these |
| Answer» (d) All of these | |
| 52. |
The most efficient form of damping employed in electrical instruments is-Options:(a) Air friction(b) Fluid friction(c) Eddy currents(d) None of these |
| Answer» (c) Eddy currents | |
| 53. |
What is the size of stack pointer in an 8085 micro proccessorOptions:(a) 32bit(b) 16bit(c) 8bit(d) 4bit |
| Answer» (b) The size of stack pointer is16bit. | |
| 54. |
The effect of increasing the length of air gap in an induction motor will be to increase theOptions:(a) Power factor(b) Speed(c) Magnetising current(d) Airgap flux |
| Answer» (c) Magnetising current | |
| 55. |
1neper is equal toOptions:(a) 0.08686db(b) 0.8686db(c) 8.686db(d) 86.86db |
| Answer» correct answer is (c) 8.686db | |
| 56. |
The force of attraction between two charge particles isOptions:(a) Directly proportional to the amount of Charge(b) Inversely proportional to amount of charge(c) Directly proportional to size of the charged particles(d) None of these |
| Answer» (a) Directly proportional to the amount of Charge | |
| 57. |
One Wattt hour contains ________ JoulesOptions:(a) 3.6X108(b) 3.6X105(c) 3.6X103(d) 3.6X10-1 |
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Answer» (c) 3.6X103Joules |
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| 58. |
A demultiplexer is used toOptions:(a) route the data from single input to one of many outputs(b) select data from several inputs and route it to single output(c) perform serial to parallel conversion(d) All of these |
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Answer» (a) route the data from single input to one of many outputs |
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| 59. |
Popular applications of flip-flop areOptions:(a) counters(b) shift registers(c) transfer register(d) all of these |
| Answer» (d) all of these | |
| 60. |
The increasing order for the value of e/m for electron (e), proton (p), neutron (n) and α particle is -(a) e, p, n, α(b) n,p,e, α(c) n,p,e, α(d) n, α, p,e |
| Answer» (d) n, α, p,e | |
| 61. |
The three fundamental particles of the atom areOptions:(a) Nucleus, Proton and Electrons(b) Proton, Neutron and Electron(c) Positron, Neutrino and Gamma Rays(d) Positron, Neutrino and Gamma Rays |
| Answer» (b) Proton, Neutron and Electron | |
| 62. |
Series that lies in infrared region of electromagnetic spectrum isOptions:a) Lyman seriesb) Ballmer seriesc) bracket seriesd) both Lyman series and Ballmer series |
| Answer» (c) bracket series | |
| 63. |
x vector space is isomorphic to Cn.(iii) Any n-dimensional vector space over the field F is isomorphic to Fn.ThenOptions:(a) Only i and ii are true.(b) i is true, but ii and iii are not true.(c) None of them is true(d) All of them are true. |
| Answer» (d) All of them are true. | |
| 64. |
Number of flip-flop needed to divide the input frequency by 32 isOptions:(a) 2(b) 4(c) 5(d) 8 |
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Answer» (c) Number of flip-flop needed to divide the input frequency by 32 is 5. |
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| 65. |
Gravitational potential energy is product ofOptions:(a) gh(b) mgh(c) mg(d) mgf |
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Answer» (b) Gravitational potential energy is product of mgh. |
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| 66. |
One Angstron unit is equal toOptions:(a) 10-10m(b) 10-08cm(c) 10-07mm(d) All of these |
| Answer» (d) All of these | |
| 67. |
Consider the star network shown in Figure The resistance between terminals A and B with C open is 6Ω, between terminals B and C with A open is 11Ω, and between terminals C and A with B open is 9Ω. ThenOptions:(a) RA=4Ω, RB=2Ω,RC=5Ω(b) RA=2Ω, RB=4Ω,RC=7Ω(c) RA=3Ω, RB=3Ω,RC=4Ω(d) RA=5Ω, RB=1Ω,RC=15Ω |
| Answer» (b) RA=2Ω, RB=4Ω,RC=7Ω | |
| 68. |
Atomic number is number ofOptions:(a) protons (p+)(b) electrons (e-)(c) neutrons (n0)(d) nucleons (p+ and n0) |
| Answer» (a) protons (p+) | |
| 69. |
Which of the following is an application of "Echo"Options:(a) Height of an Aeroplane(b) Stethoscope(c) in SONAR system to detect the presence of submarine(d) All of these |
| Answer» (d) All of these | |
| 70. |
A vector having magnitude only is calledOptions:(a) scalar(b) resultant(c) unit vector(d) temperature |
| Answer» (c) unit vector | |
| 71. |
For the logic circuit shown in the figure, the required input condition (A,B,C) to make the output (X) = 1 is-Options:(a) 1,0,1(b) 0,0,1(c) 1,1,1(d) 0,1,1 |
| Answer» correct answer is (d) 0,1,1. | |
| 72. |
Figure shows a chopper operating from a 100V dc input. The duty ratio of the main switch S is 0.8. The load is sufficiently inductive so that the load current is ripple free. The average current through the diode D under steady ripple free. The average current through the diode D under steady state isOptions:(a) 8A(b) 1.6A(c) 10A(d) 6.4A |
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Answer» (a) The average current through the diode D under steady state is 8A. |
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| 73. |
Digital circuit can be made by the repeated use ofOptions:(a) OR gates(b) NOT gates(c) NAND gates(d) None of these |
| Answer» (c) NAND gates | |
| 74. |
The natural element whose atomic no. is greater than …… are radioactiveOptions:(a) 52(b) 62(c) 72(d) 82 |
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Answer» (b) The natural element whose atomic no. is greater than …62… are radioactive. |
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| 75. |
Which among the following quantity have neither units nor the dimensionsOptions:(a) Realtive permeabiolity(b) Plane angle(c) Solid Angle(d) Radian |
| Answer» (a) Realtive permeabiolity | |
| 76. |
Physical quantities having magnitude only are calledOptions:(a) vector quantities(b) scalar quantities(c) mental quantities(d) both vector quantities and scalar quantities |
| Answer» (b) scalar quantities | |
| 77. |
In a series RLC circuit the power factor under resonance condition will be _______________Options:(a) 1(b) 0(c) √2(d) 1/√2 |
| Answer» The correct answer is (a) 1. | |
| 78. |
Which of the following logic gates dissipates minimum power?Options:(a) RTL(b) TTL(c) MOS(d) ECL |
| Answer» correct answer is (c) MOS. | |
| 79. |
Which of the following is a common unit of a physical quantity in M.K.S & S.I systems.Options:(a) ampere(b) kelvin(c) mole(d) joule/sec |
| Answer» (d) joule/sec | |
| 80. |
In the circuit shown, maximum power will be transferred whenOptions:(a) ZL=(6.5+j4.5)Ω(b) ZL=(4.5+j6.5)Ω(c) ZL=(4.5j - 6.5)Ω(d) ZL=(6.5j - 4.5)Ω |
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Answer» (c) ZL=(4.5j-6.5)Ω |
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| 81. |
Bouguer's law relates ____________.Options:(a) Light relfection(b) Light refraction(c) Light transmission(d) Light Absorption |
| Answer» (d) Light Absorption | |
| 82. |
Kirchoff's second law is based on law of conservation ofOptions:(a) charge(b) energy(c) momentum(d) mass |
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Answer» (b) Kirchoff's second law is based on law of conservation of energy. |
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| 83. |
Find the d/dx(ex) = Options:(a) ex(b) xex(c) xe-x(d) -xe-x |
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Answer» The correct answer is (b) xex |
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| 84. |
The function, whose laplace transform is s/(s2 +w2) isOptions:(a) Cos(wt)(b) 1/wcos(wt)(c) Sin(wt)(d) wsin(wt) |
| Answer» correct answer is (a) Cos(wt) | |
| 85. |
The laplace transform of 1/(a - b)(aeat - bebt) isOptions:(a) 1/(s- a)(s - b) (a ≠ b)(b) s/(s - a)(s - b) (a ≠ b)(c) s/(s + a)(s +b) (a ≠ b)(d) None of these |
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Answer» (b) s/(s - a)(s - b) (a ≠ b) |
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| 86. |
If x= rcosθ , y= rsinθ then the value of d2θ/dx2 + d2θ/dx2 isOptions:(a) 0(b) 1(c) dr/dx(d) dr/dy |
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Answer» (a) The value of d2θ/dx2 + d2θ/dx2 is 0. |
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| 87. |
The number of roots of s3 + 5s2 + 7s + 3 =0Options:(a) 0(b) 1(c) 2(d) 3 |
| Answer» correct answer is (d) 3 | |