Engineering Entrance

Q. In a series RLC circuit, what condition must be met for resonance to occur? (2021)
  • A. R = 0
  • B. XL = XC
  • C. R = XL
  • D. R = XC
Q. In a thin film interference experiment, what type of interference occurs when light reflects off a denser medium? (2023)
  • A. Constructive interference
  • B. Destructive interference
  • C. No interference
  • D. Total internal reflection
Q. In a thin film of oil on water, what color will be seen if the film thickness is such that destructive interference occurs for blue light? (2021)
  • A. Red
  • B. Green
  • C. Blue
  • D. Yellow
Q. In a thin film of oil on water, which color will appear at the center of the pattern if the film is viewed in white light? (2022)
  • A. Red
  • B. Blue
  • C. Green
  • D. Yellow
Q. In a vacuum, which of the following travels the fastest?
  • A. Sound
  • B. Light
  • C. Water waves
  • D. Radio waves
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? (2023) 2023
  • A. Concentration of reactants
  • B. Temperature
  • C. Presence of a catalyst
  • D. All 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 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 0.8, 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 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 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
Q. In an AC circuit, if the voltage is 120V and the current is 10A with a power factor of 0.8, what is the real power consumed? (2021)
  • A. 120W
  • B. 800W
  • C. 960W
  • D. 1000W
Q. In an AC circuit, if the voltage is 120V and the current is 10A, what is the power factor if the real power is 600W? (2022)
  • A. 0.5
  • B. 0.6
  • C. 0.8
  • D. 1.0
Q. In an AC circuit, if the voltage is given by V(t) = 100 sin(100t), what is the RMS voltage? (2023)
  • A. 100 V
  • B. 70.7 V
  • C. 50 V
  • D. 141.4 V
Q. In an AC circuit, if the voltage is given by V(t) = 100√2 sin(1000t), what is the peak voltage? (2023)
  • A. 100 V
  • B. 100√2 V
  • C. 200 V
  • D. 50 V
Q. In an AC circuit, if the voltage is V(t) = 120 sin(ωt), what is the RMS voltage? (2017)
  • A. 120 V
  • B. 60 V
  • C. 84.85 V
  • D. 100 V
Q. In an AC circuit, the voltage is given by V(t) = V0 sin(ωt). What is the peak voltage if V0 = 10V? (2021)
  • A. 5V
  • B. 10V
  • C. 15V
  • D. 20V
Q. In an AC circuit, the voltage is given by V(t) = V0 sin(ωt). What is the peak voltage? (2021)
  • A. V0
  • B. ω
  • C. t
  • D. 0
Q. In an adiabatic process, the relationship between pressure and volume for an ideal gas is given by which equation? (2020)
  • A. PV^n = constant
  • B. PV = nRT
  • C. P1V1 = P2V2
  • D. V/T = constant
Q. In an adiabatic process, the temperature of an ideal gas decreases. What happens to its pressure?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on volume
Q. In an adiabatic process, which of the following is true? (2020)
  • A. Heat is absorbed from the surroundings
  • B. Heat is released to the surroundings
  • C. No heat is exchanged
  • D. Temperature remains constant
Q. In an adiabatic process, which of the following remains constant? (2020)
  • A. Temperature
  • B. Pressure
  • C. Internal Energy
  • D. Enthalpy
Q. In an isochoric process, which of the following remains constant? (2022)
  • A. Pressure
  • B. Volume
  • C. Temperature
  • D. Internal Energy
Q. In an isothermal process, the temperature of the gas remains constant. What can be said about the internal energy of an ideal gas? (2020) 2020
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It varies with pressure
Q. In an isothermal process, the temperature of the system remains: (2023)
  • A. Constant
  • B. Increases
  • C. Decreases
  • D. Varies
Q. In an RLC circuit, if the resistance is 6Ω, inductive reactance is 8Ω, and capacitive reactance is 4Ω, what is the total impedance? (2021)
  • A. 10Ω
  • B. 12Ω
  • C. 14Ω
  • D. 16Ω
Q. In an RLC circuit, if the resistance is increased, what happens to the quality factor (Q)? (2021)
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
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