Physics ECAT Pre Engineering MCQ's Test For Full Book With Answers

Physics ECAT Pre Engineering MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 The driection of vector si space is specified by: <br>One angle Two angles Three angles None of above
2 The sum of two or more vectors is equal to a single vector which is called: Component vector Resultant vector Product vector None of these
3 Which of the following are the units of intensity of light Pois Lux Siemen Candela
4 All trigonometric functions (since, cosine tangent etc. ) are positive in: 1st Quadrant 2nd Quadrant 3rd Quadrant 4th Quadrant
5 Number of supplementary units are Three Two Seven Five
6 Total number of base units are Three Five Seven Nine
7 Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is: 20 N -2 N 18 N 36 N
8 The system international (SI) is built from _______ kind of unites Two Three Four Five
9 The principle characteristics of an ideal standard are Inaccessible and Invariable Accessible and Invariable Accessible and Variable None of these
10 The vector is space has: One Component Two Compnents Three Components Non of these
11 Diameter of the atom is of the order of 10<sup>-10</sup>m 10<sup>-12</sup>m 10<sup>-15</sup>m 10<sup>-9</sup>m
12 Diameter of the nucleus s of the order of 10<sup>-10</sup>m 10<sup>-12</sup>m 10<sup>-15</sup>m 10<sup>-18</sup>m
13 Distance to nearest galaxy from earth is 10<sup>10</sup>m 10<sup>15</sup>m 10<sup>40</sup>m 10<sup>30</sup>m
14 Physical quantities are often divided into ______ categories 3 2 9 5
15 Those quantities which can be measured accurately are known as Physical Quantities Scalar Quantities Vector Quantities Non Physical Quantities
16 Which branch of physics deals with the structure and properties of solids Atomic Physics Plasma Physics Molecular Physics Solid state physics
17 Computer chips are made from Conductors Semiconductors Insulators Both A and B
18 The branch of physics which concerned with the ultimate particles of which the universe is composed is known as SolidState physics Particle Physics Nuclear Physics Atomic Physics
19 The instrument used to gather information form the far side of the universe is Compound microscope Radio telescope Astronomical Telescope Simple microscope
20 At the present time, the main frontiers of fundamental science are 2 3 4 5
21 A choke coil is used as a resistance in d.c. circuit a.c. circuit d.c. potentiometer circuit wheatstone bridge
22 The A.M. transmission frequency range from 500-1000 KHz 540-1600 KHz 300-490 KHz 900-2040 KHz
23 Which of the following waves are more energetic radio waves infrared waves ultraviolet <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: small;">γ-rays</span>
24 The electric field, magnetic field and the direction of their propagation are mutually perpendicular parallel none of these
25 A piece of wire along which charges are made to accelerate is known as transmitting antenna receiving antenna modulator nor of these
26 In a three phase a.c generator if the first coil has a phase 0, then the other two coils will have phases 90<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">° - 120</span><span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 20<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">° and 140</span><span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 120<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">° and 240</span><span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 120<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">° and 140</span><span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
27 In a three phase a.c. generator, there are 2 coils 3 coils 1 coild No coil
28 For a parallel resonant circuit at resonance, current from supply is minimum maximum zero none of these
29 The L-C parallel circuit the capacitor draws a leading current lagging current main current none of these
30 The circuit in which current and voltage are in phase, the power factor is zero 1 negative 0.83
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