This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Applications of Megger”.
1. Why is the scale of a megger calibrated in megaohms?
a) to indicate resistance
b) to minimise the current flow
c) to increase the voltage drop
d) to reduce the temperature
2. Megger can be used for verifying the electrical insulation level of ____________
a) passive components such as resistance, capacitor and inductance
b) devices such as motor, cable, etc
c) solid state devices
d) liquid crystal devices
3. Continuity between any two points can be measured using _________
4. Electrical continuity between any two points exists if _________
a) there is current flow through them
b) there is a wire connecting the points
c) there is sufficient voltage drop
d) pointer shows deflection
5. Megger is also known as _________
6. The application of a megger is _________
a) to measure resistance
b) to test for leakage
c) to limit the current
d) to increase the emf of the circuit
7. What is the significance of a megger with respect to high resistance?
a) it is used to limit the current
b) it is used to provide stability
c) used for measuring high resistance with respect to ground
d) it is used for temperature protection
8. How is the megger calibrated?
a) in steps of 1 unit per division
b) based on the value of resistance to be measured
c) directly calibrated on the position of the pointer
d) reversely calibrated based on the pointer position