Major Competitive Exams

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Q. What is the power factor of a circuit with a resistance of 8Ω and a reactance of 6Ω? (2023)
  • A. 0.5
  • B. 0.6
  • C. 0.8
  • D. 1.0
Q. What is the power factor of an AC circuit with a phase angle of 60 degrees?
  • A. 0.5
  • B. 0.866
  • C. 1
  • D. 0.707
Q. What is the power factor of an AC circuit with a phase angle of 60°? (2022)
  • A. 0.5
  • B. 0.866
  • C. 1
  • D. 0.707
Q. What is the power of a lens with a focal length of 50 cm?
  • A. +2 D
  • B. +1 D
  • C. -2 D
  • D. -1 D
Q. What is the power output of a motor that does 1200 J of work in 30 seconds?
  • A. 20 W
  • B. 40 W
  • C. 60 W
  • D. 80 W
Q. What is the power output of a motor that does 3000 J of work in 15 seconds?
  • A. 200 W
  • B. 300 W
  • C. 400 W
  • D. 500 W
Q. What is the power set of A = {a, b}?
  • A. {∅, {a}, {b}, {a, b}}
  • B. {a, b}
  • C. {∅, {a, b}}
  • D. {a, b, {a, b}}
Q. What is the power set of the empty set ∅?
  • A. {∅}
  • B. {∅, {∅}}
  • C.
  • D. {∅, ∅}
Q. What is the power set of the set F = {a}?
  • A. {∅, {a}}
  • B. {∅, a}
  • C. {a}
  • D. {∅}
Q. What is the power set of the set G = {1}?
  • A. {∅, {1}}
  • B. {1}
  • C. {∅}
  • D. {1, ∅}
Q. What is the power set of the set {1, 2}?
  • A. {∅, {1}, {2}, {1, 2}}
  • B. {∅, {1, 2}}
  • C. {1, 2}
  • D. {1, 2, ∅}
Q. What is the prefix for 10^-6 in the SI system?
  • A. Milli
  • B. Micro
  • C. Nano
  • D. Pico
Q. What is the prefix for 10^6? (2022)
  • A. Kilo
  • B. Mega
  • C. Giga
  • D. Tera
Q. What is the pressure exerted by a force of 100 N over an area of 5 m²? (2023)
  • A. 20 Pa
  • B. 25 Pa
  • C. 15 Pa
  • D. 30 Pa
Q. What is the pressure exerted by a force of 200 N acting on an area of 4 m²? (2015)
  • A. 50 Pa
  • B. 100 Pa
  • C. 200 Pa
  • D. 400 Pa
Q. What is the primary active ingredient in aspirin? (2019)
  • A. Acetylsalicylic acid
  • B. Salicylic acid
  • C. Acetic acid
  • D. Benzoic acid
Q. What is the primary active ingredient in most antacids?
  • A. Calcium carbonate
  • B. Magnesium hydroxide
  • C. Aluminum hydroxide
  • D. All of the above
Q. What is the primary advantage of a Swiss-system tournament over a round-robin tournament?
  • A. More matches are played.
  • B. All players play the same number of matches.
  • C. It allows for quicker elimination.
  • D. It pairs players with similar scores.
Q. What is the primary advantage of asexual reproduction? (2022)
  • A. Genetic diversity
  • B. Rapid population increase
  • C. Requires less energy
  • D. All of the above
Q. What is the primary advantage of forming a partnership over a sole proprietorship?
  • A. Limited liability for all partners
  • B. Increased capital and resources
  • C. Simplicity in decision-making
  • D. Complete control over business decisions
Q. What is the primary advantage of having a diverse team? (2023)
  • A. Easier decision-making
  • B. Increased creativity and innovation
  • C. Faster completion of tasks
  • D. Uniformity in thought
Q. What is the primary advantage of sexual reproduction? (2021)
  • A. Faster reproduction
  • B. Genetic diversity
  • C. No need for a mate
  • D. Lower energy requirement
Q. What is the primary advantage of using digital signals over analog signals in communication systems?
  • A. Higher bandwidth
  • B. Less susceptibility to noise
  • C. Easier to modulate
  • D. Lower power consumption
Q. What is the primary advantage of using hybrid sets in data analysis?
  • A. They simplify complex data structures.
  • B. They eliminate redundancy in data.
  • C. They allow for the combination of diverse data types.
  • D. They are easier to visualize.
Q. What is the primary advantage of using hybrid sets in data organization?
  • A. They simplify complex data relationships.
  • B. They eliminate the need for data analysis.
  • C. They can only store numerical data.
  • D. They are always smaller than traditional sets.
Q. What is the primary advantage of using the octal system in computing?
  • A. It simplifies binary representation.
  • B. It is easier for humans to read than binary.
  • C. It is the only system used in programming.
  • D. It is more efficient than hexadecimal.
Q. What is the primary aim of the National Rural Livelihood Mission (NRLM)? (2011)
  • A. To provide free education
  • B. To promote self-employment and organization of rural poor
  • C. To enhance agricultural productivity
  • D. To provide health insurance
Q. What is the primary application of nuclear fusion in stars?
  • A. Energy production
  • B. Nuclear weapons
  • C. Radioactive dating
  • D. Medical imaging
Q. What is the primary application of nuclear fusion? (2023)
  • A. Nuclear power plants
  • B. Hydrogen bombs
  • C. Medical imaging
  • D. Smoke detectors
Q. What is the primary application of recombinant DNA technology in agriculture? (2020)
  • A. Increased crop yield
  • B. Pest resistance
  • C. Improved nutritional value
  • D. All of the above
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