One limitation of a single-spring seal is the _____.

One limitation of a single-spring seal is the _____.
 
  a. pressure exerted by the spring
  b. ability to properly seat the seal
  c. radial space it requires
  d. leak rate of the seal

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[Ques. 2] Centering tabs and spacers are used to center the seal during installation and then removed after the seal
  assembly is secured in place on _____ seals.
 
  a. tandem
  b. metal bellows
  c. cartridge
  d. balanced

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[Ques. 3] One advantage of using multiple-spring seals is that they are _____.
 
  a. not as susceptible to distortion at high speeds
  b. smaller than single spring seals
  c. less expensive than single spring seals
  d. easier to install than most other types of seals

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[Ques. 4] Mechanical seals that are self-contained units set at the factory and installed as complete assemblies are called
  _____ seals.
 
  a. tandem
  b. metal bellows
  c. cartridge
  d. balanced

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[Ques. 5] The welded metal bellows seal uses a bellows instead of _____.
 
  a. springs
  b. seal faces
  c. centering tabs
  d. O-rings