Correct
空载
/ kōngzài /
Strokes
Definition
(of a ship, train etc) not carrying any load (i.e. no passengers or freight etc)/(electricity) no-load (used to describe the condition of a transformer when there is no load connected to its secondary coil)
Example
As a Verb
(of a vehicle or a piece of equipment) operate without load
1
Kōngzài
空载
yùnzhuǎn
运转
no-load running