QUES: Specific studies of Slavic genetics followed. In 2007 Rębała and colleagues studied several Slavic populations with the aim of localizing the Proto-Slavic homeland. The significant findings of this study are that:

In 2007 Rębała and colleagues studied several Slavic populations with the aim of localizing what?
What is the answer?
ANS: the Proto-Slavic homeland
QUES: There were important quality advances in recordings specifically made for radio broadcast. In the early 1930s Bell Telephone Laboratories and Western Electric announced the total reinvention of disc recording: the Western Electric Wide Range System, "The New Voice of Action". The intent of the new Western Electric system was to improve the overall quality of disc recording and playback. The recording speed was 33 1⁄3 rpm, originally used in the Western Electric/ERPI movie audio disc system implemented in the early Warner Brothers' Vitaphone "talkies" of 1927.

What speed was used in the Western Electric System?
What is the answer?
ANS: 33 1⁄3 rpm
QUES: When used with a load that has a torque curve that increases with speed, the motor will operate at the speed where the torque developed by the motor is equal to the load torque. Reducing the load will cause the motor to speed up, and increasing the load will cause the motor to slow down until the load and motor torque are equal. Operated in this manner, the slip losses are dissipated in the secondary resistors and can be very significant. The speed regulation and net efficiency is also very poor.

Where are slip losses dissipated?
What is the answer?
ANS:
secondary resistors