Question Discussion & Solution

Blades are necessary part of fan. Fan can be branded or local. Current and switches are important for functioning so they are not necessary for manufacturing a fan.

(E_Name, Salary_in_Lakhs) is the key

(E_Name, Salary_in_Lakhs) → {E_ID, E_Age, E_mail}

E_Name: Nitesh is repeated

Check only for Nitesh

(Nitesh, 9) → (XE005, 24, nitestSE@123)

(Nitesh, R) → (XE023, 24, nitestCE@123)

Since right hand side is not same

Therefore, R cannot be equal to 9

The pattern followed here is:

According to the alphabetical positions of the letters,

Hence, ‘JAK’ is the correct answer.

The correct answer is Switched Mode Power Supply.

• The full form of SMPS is Switched Mode Power Supply.

​Key Points

• SMPS or switched-mode power supply 
  • SMPS or switched-mode power supply is an electronic device that is used to convert AC to DC, AC to AC, DC to DC and DC to AC voltages. 
  • The circuit consists of a rectifier, voltage regulator transformer, and a filter. 
  • The input supply is turned On and Off by MOSFETs.
• Fundamentally, different types of circuits work with various kinds of power supplies such as SMPS.

Additional Information

Concept:

Pure virtual function:

• A pure virtual function is a virtual function that is required to be implemented by a derived class if derived class is not abstract.
• Base class containing pure virtual function becomes abstract.

Syntax of pure virtual function:

Virtual func_type func_name () = 0;

So option 4 is the correct answer.