Electronics Engineering MCQs [Quiz 38]

Q1. Points to be considered in choosing a capacitor
A. Working voltage
B. Type of dielectric
C. Capacitance
D. All of the above

Q2. Permeability is otherwise known as
A. Magnetic conductivity
B. Magnetic susceptibility
C. Electric conductivity
D. Electric susceptibility

Q3. The impedance in the study of electronics is represented by resistance and
A. Inductance
B. Capacitance
C. Inductance and capacitance
D. Reactance

Q4. Loop currents should be assumed to flow in which direction
A. Straight
B. Clockwise
C. Counter-clockwise
D. Either B or C arbitrarily selected

Q5. What determines the direction of induced emf in a conductor or coil?
A. Cork screw rule
B. Fleming’s left hand rule
C. Ampere’s circuital law
D. Fleming’s right hand rule

Q6. The reason why electrical appliances are connected in parallel.
A. It is a simple circuit
B. This makes the operation of appliances independent with each other
C. This results in reduced power consumption
D. All of the above

Q7. Which of the following does not affect resistance?
A. Resistivity
B. Cross-sectional area
C. Mass
D. Length

Q8. Which of the following is not considered a physical factor affecting resistance?
A. Length
B. Material type
C. Temperature
D. Cross-sectional

Q9. A 0.09 microfarad capacitor is charged to 220 volts. How long in milliseconds will it discharged resistor has a resistance of 20,000 ohms?
A. 1.5
B. 2.5
C. 1.25
D. 0.5

Q10. A trigger circuit consisting of a capacitor of 0.01 µF is connected in series with a resistor. If the circuit requires 100 Vdc to operate, determine the value of the resistor when time constant is 0.009s.
A. 900 fi
B. 900 kfi
C. 900 Mfi
D. 900 Gfi

Updated: 17th August 2019 — 8:19 PM

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