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Major Competitive Exams

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Q. In a writing contest, 4 winners are chosen from 15 entries. If the winners are to be announced in a specific order, how many different arrangements of winners are possible?
  • A. 360
  • B. 840
  • C. 1260
  • D. 2100
Q. In a Zener diode, what is the purpose of the reverse breakdown region? (2020)
  • A. To increase voltage
  • B. To regulate voltage
  • C. To decrease current
  • D. To store energy
Q. In a zero-order reaction, how does the rate change with respect to concentration?
  • A. Increases linearly
  • B. Decreases linearly
  • C. Remains constant
  • D. Increases exponentially
Q. In a zero-order reaction, if the rate constant k is 5 mol/L/s, how long will it take for the concentration to decrease from 2 mol/L to 0 mol/L?
  • A. 0.4 s
  • B. 0.5 s
  • C. 0.6 s
  • D. 0.8 s
Q. In a zero-order reaction, the rate of reaction is independent of the concentration of the reactants. What is the unit of the rate constant (k) for a zero-order reaction? (2023)
  • A. mol/L·s
  • B. L^2/mol·s
  • C. mol/L
  • D. s^-1
Q. In a zero-order reaction, the rate of reaction is independent of which of the following?
  • A. Concentration of reactants
  • B. Temperature
  • C. Catalyst
  • D. All of the above
Q. In a zero-order reaction, the rate of reaction is independent of which of the following? (2023) 2023
  • A. Concentration of reactants
  • B. Temperature
  • C. Presence of a catalyst
  • D. All of the above
Q. In amplitude modulation (AM), what does the amplitude of the carrier wave represent?
  • A. The frequency of the modulating signal
  • B. The phase of the modulating signal
  • C. The information signal
  • D. The power of the carrier wave
Q. In amplitude modulation (AM), what does the carrier wave represent?
  • A. The information signal
  • B. The frequency of the modulated signal
  • C. The average power of the signal
  • D. The high-frequency signal that carries the information
Q. In an AC circuit, if the capacitive reactance is greater than the inductive reactance, the circuit is said to be:
  • A. Resistive
  • B. Inductive
  • C. Capacitive
  • D. Neutral
Q. In an AC circuit, if the current is given by I(t) = I0 cos(ωt), what is the RMS current? (2021)
  • A. I0/√2
  • B. I0
  • C. 2I0
  • D. I0/2
Q. In an AC circuit, if the current lags the voltage by 30 degrees, what is the power factor? (2023)
  • A. 0.866
  • B. 0.5
  • C. 1
  • D. 0.707
Q. In an AC circuit, if the current lags the voltage by 30 degrees, what is the type of load?
  • A. Resistive
  • B. Inductive
  • C. Capacitive
  • D. None of the above
Q. In an AC circuit, if the current lags the voltage by 30 degrees, what type of circuit is it?
  • A. Resistive
  • B. Inductive
  • C. Capacitive
  • D. None of the above
Q. In an AC circuit, if the current lags the voltage by 30 degrees, what type of load is present?
  • A. Resistive
  • B. Inductive
  • C. Capacitive
  • D. None of the above
Q. In an AC circuit, if the current lags the voltage by 45 degrees, what is the type of load?
  • A. Resistive
  • B. Inductive
  • C. Capacitive
  • D. None of the above
Q. In an AC circuit, if the frequency is 60Hz and the inductance is 0.2H, what is the inductive reactance? (2021)
  • A. 12.56Ω
  • B. 37.68Ω
  • C. 75.36Ω
  • D. 100Ω
Q. In an AC circuit, if the frequency is doubled, what happens to the inductive reactance?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In an AC circuit, if the frequency is doubled, what happens to the reactance of an inductor?
  • A. Doubles
  • B. Halves
  • C. Remains the same
  • D. Quadruples
Q. In an AC circuit, if the frequency is increased, what happens to the capacitive reactance? (2020)
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. In an AC circuit, if the frequency is increased, what happens to the inductive reactance? (2020)
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. In an AC circuit, if the power factor is 0.5, what is the angle between voltage and current?
  • A. 30 degrees
  • B. 60 degrees
  • C. 90 degrees
  • D. 45 degrees
Q. In an AC circuit, if the power factor is 0.5, what is the angle φ between the voltage and current? (2019)
  • A. 30 degrees
  • B. 60 degrees
  • C. 90 degrees
  • D. 45 degrees
Q. In an AC circuit, if the power factor is 0.8, what is the angle between the voltage and current? (2020)
  • A. 36.87°
  • B. 53.13°
  • C. 60°
  • D. 45°
Q. In an AC circuit, if the power factor is 1, what type of load is present?
  • A. Inductive
  • B. Capacitive
  • C. Resistive
  • D. Reactive
Q. In an AC circuit, if the resistance is 10 ohms and the inductive reactance is 20 ohms, what is the impedance? (2020)
  • A. 10 ohms
  • B. 20 ohms
  • C. √(10² + 20²)
  • D. 30 ohms
Q. In an AC circuit, if the resistance is 10 ohms and the inductive reactance is 20 ohms, what is the total impedance? (2020)
  • A. 10 ohms
  • B. 20 ohms
  • C. √(10² + 20²)
  • D. 30 ohms
Q. In an AC circuit, if the resistance is 10Ω and the inductive reactance is 20Ω, what is the total impedance? (2020)
  • A. 10Ω
  • B. 20Ω
  • C. √(10² + 20²)
  • D. 30Ω
Q. In an AC circuit, if the total current is 5A and the total voltage is 100V, what is the impedance? (2021)
  • A. 20Ω
  • B. 25Ω
  • C. 30Ω
  • D. 15Ω
Q. In an AC circuit, if the voltage is 120 V and the current is 10 A with a power factor of 0.8, what is the real power consumed? (2021)
  • A. 960 W
  • B. 1200 W
  • C. 800 W
  • D. 1000 W
Showing 15181 to 15210 of 31669 (1056 Pages)

Major Competitive Exams MCQ & Objective Questions

Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.

What You Will Practise Here

  • Key concepts and theories related to major subjects
  • Important formulas and their applications
  • Definitions of critical terms and terminologies
  • Diagrams and illustrations to enhance understanding
  • Practice questions that mirror actual exam patterns
  • Strategies for solving objective questions efficiently
  • Time management techniques for competitive exams

Exam Relevance

The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.

Common Mistakes Students Make

  • Rushing through questions without reading them carefully
  • Overlooking the negative marking scheme in MCQs
  • Confusing similar concepts or terms
  • Neglecting to review previous years’ question papers
  • Failing to manage time effectively during the exam

FAQs

Question: How can I improve my performance in Major Competitive Exams?
Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.

Question: What types of questions should I focus on for these exams?
Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.

Question: Are there specific strategies for tackling objective questions?
Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.

Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!

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