Junior Tester Interview Questions and Answers

Tuple is immutable, ordered collection while list is mutable, ordered collection in Python.

• Tuple is created using parentheses () while list is created using square brackets []

• Tuple elements cannot be changed once assigned while list elements can be modified

• Tuple is faster than list for iteration and accessing elements

• Example: tuple = (1, 2, 3) and list = [1, 2, 3]

The direction of motor start depends on the type of motor and its wiring.

• Single-phase AC motors start in one direction and can be reversed by swapping the connections of the start winding.

• Three-phase AC motors can start in either direction depending on the phase sequence of the power supply.

• DC motors can be designed to start in either direction by reversing the polarity of the power supply.

• Some motors have built-in mechanisms to ensure they always start in the same direction,...read more

Staircase wiring is a type of electrical wiring where a single light is controlled from two or more different places.

• Staircase wiring is commonly used in multi-story buildings.

• It involves two switches, one at the bottom and one at the top of the stairs.

• The switches are connected in parallel to the light bulb.

• When either switch is turned on, the light will turn on.

• If the light is on and the other switch is turned on, the light will turn off.

Testing techniques include black box testing, white box testing, unit testing, integration testing, system testing, regression testing, and acceptance testing.

• Black box testing focuses on the functionality of the software without looking at its internal code.

• White box testing involves testing the internal code structure, paths, and branches.

• Unit testing tests individual units or components of the software.

• Integration testing tests the integration of different components or mo...read more