I have used the following procedure.
Procedure to install the apk files in Android Emulator(AVD):
Check your installed directory(ex: C:\Program Files (x86)\Android\android-sdk\platform-tools), whether it has the adb.exe or not). If not present in this folder, then download the attachment here, extract the zip files. You will get adb files, copy and paste those three files inside tools folder
Run AVD manager from C:\Program Files (x86)\Android\android-sdk and start the Android Emulator.
Copy and paste the apk file inside the C:\Program Files (x86)\Android\android-sdk\platform-tools
Go to Start -> Run -> cmd
Type cd “C:\Program Files (x86)\Android\android-sdk\platform-tools”
Type adb install example.apk
After getting success command
Go to Application icon in Android emulator, we can see the your application