What type of drive system is primarily used for long-distance transportation of materials like coal and mineral ores?

Belt drives

In an open belt drive system, the direction of rotation of both pulleys is ______.

The same

True or False: The slack side of the belt is always on the lower side in a horizontal belt drive system.

False. The slack side of the belt is on the upper side, while the tight side is on the lower side.

What does the symbol α represent in the nomenclature of belt drives?

Angle of wrap of the pulley

Riddle: I’m a flexible element that can absorb shock and vibration, while also allowing for some misalignment. What am I?

Belt drive

The ratio of tension between the tight side and slack side of a belt can be expressed as T1/T2 = e^(μα). What does T1 represent?

Tension on the tight side

Fill-in-the-blanks: The belt drive primarily operates on the principle of ______ between the belt and the pulley.

Friction

Which type of belt drive is characterized by a trapezoidal cross-section and is commonly used in industrial applications?

V-belt drives

True or False: The maximum power transmission capacity of a belt drive increases with an increase in the angle of wrap.

True

What is the formula for the length of an open belt drive, considering the angle of wrap and center distance?

L0 = Length of open belt

Fill-in-the-blanks: The initial tension in the belt is denoted as ______.

Ti

Which factor is used to modify the kW rating of a V-belt based on the actual operating conditions?

Service factor

Riddle: I help transmit power between pulleys, but if too much tension is applied, I might snap. What am I?

Belt

In V-belt drives, the power rating is based on the angle of wrap being ______.

180 degrees

True or False: V-belts are less efficient than flat belts and are recommended for longer center distances.

False. V-belts are slightly less efficient than flat belts but are recommended for shorter center distances.

What type of material is commonly used for making V-belts to enhance their strength?

Fabric and cords of cotton or nylon impregnated with rubber

Fill-in-the-blanks: The formula for power transmitted by a belt drive is P = (T1 - T2) ______.

V