Sail E0 Webinar

MCQs

Electromagnetic Induction, Alternating Current And Voltage

Total Questions : 385 | Page 10 of 39 pages
Question 91. Which of the following will increase the antenna radiation efficiency?
  1.    Any of the above
  2.    Use of larger section of conductor
  3.    Top loading of antenna
  4.    Providing insulation on conductor
 Discuss Question
Answer: Option C. -> Top loading of antenna
Question 92. The radiation pattern of a parabola antenna is
  1.    Omnidirectional
  2.    Highly directional
  3.    A figure of directional
  4.    None of these
 Discuss Question
Answer: Option B. -> Highly directional
Question 93. The virtual height of an ionospheric layer is __________ true height
  1.    Equal to
  2.    Less than
  3.    No relation
  4.    Higher than
 Discuss Question
Answer: Option D. -> Higher than
Question 94. According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when
  1.    The impedance of one of the networks is half that of the other
  2.    The impedance of one is the complex conjugate of the other
  3.    The impedance of one is equal to that of the other
  4.    None of these
 Discuss Question
Answer: Option B. -> The impedance of one is the complex conjugate of the other
Question 95. The transmitting antennas for lower frequencies (below 500 kHz) are generally
  1.    Horizontal suspended wire type
  2.    Any of the above
  3.    Vertical grounded wire type
  4.    Parabolic reflector type
 Discuss Question
Answer: Option C. -> Vertical grounded wire type
Question 96. Tropospheric scatter propagation is not subject to any fading.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 97. In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to
  1.    No change in the impedance value
  2.    Decrease in the value of reactance
  3.    No change in the reactance value
  4.    An increase in the value of reactance
 Discuss Question
Answer: Option D. -> An increase in the value of reactance
Question 98. The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a
  1.    None of these
  2.    Circle
  3.    Null
  4.    Figure of eight
 Discuss Question
Answer: Option D. -> Figure of eight
Question 99. In case of surface waves the field strength at a point is directly proportional to
  1.    Antenna height
  2.    Current of the antenna
  3.    Distance of the point from the antenna
  4.    Wave frequency
 Discuss Question
Answer: Option C. -> Distance of the point from the antenna
Question 100. A square corner reflector is used in which of the following?
  1.    All of these
  2.    TV broadcast
  3.    Radio astronomy
  4.    Point-to-point communication
 Discuss Question
Answer: Option A. -> All of these

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024
Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Chapter 1.1 : INTRODUCTION Chapter 1 : Raw Material Handling Plant SAIL E0 - GPOE/GPA 2024
Chapter 3.1 : INTRODUCTION Chapter 3 : Sinter Plant SAIL E0 - GPOE/GPA 2024
Chapter 2.3 : COAL HANDLING PLANT - Set 1 Chapter 2 : Coke Ovens and Coal Chemicals SAIL E0 - GPOE/GPA 2024