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API-SIEE Practice Questions

Source Inspector Electrical Equipment

Last Update 3 days ago
Total Questions : 110

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Question # 21

Which enclosure type is defined in the guide as a construction where free exchange of air is prevented between the inside and outside of the motor?

Options:

A.  

Open drip proof

B.  

TEFC

C.  

WP-II

D.  

Purged pressurized

Discussion 0
Question # 22

Laminations in a motor stator core are used to reduce:

Options:

A.  

AC voltage.

B.  

frequency.

C.  

energy loss.

D.  

DC voltage.

Discussion 0
Question # 23

Machine vibration measurement using non contacting probes are taken:

Options:

A.  

on horizontal, vertical and the axial directions on the baseplate.

B.  

on the shaft at 1.2 times the running speed.

C.  

on the frame during residual unbalance with the feet unclamped.

D.  

on horizontal, vertical and the axial directions on the bearing housings.

Discussion 0
Question # 24

What tool is designed to measure mechanical oscillations?

Options:

A.  

Techometer

B.  

Spectroscope

C.  

Oscilloscope

D.  

Vibration Meter

Discussion 0
Question # 25

What is the purpose of an insulation resistance reading?

Options:

A.  

To evaluate the insulation and condition of the grounding

B.  

To determine the resistance of the conductors

C.  

To evaluate the condition of the insulation between conductors and ground

D.  

To determine if the conductors are properly terminated

Discussion 0
Question # 26

According to ANSI C57.12, the tank pressure under rated conditions of sealed transformers shall not exceed what value?

Options:

A.  

One atmosphere

B.  

Two atmospheres

C.  

Three atmospheres

D.  

Four atmospheres

Discussion 0
Question # 27

According to API 541, prior to mechanical running test, each mounting foot shall be checked for “soft feet.” How is this check conducted?

Options:

A.  

Feeler gauges are used at the foot to base interface to verify gap tolerance has not been exceeded

B.  

After torquing mounting bolts, a vertically oriented, zeroed, dial indicator is attached to each foot and a reading taken after loosening of the bolt torque to verify movement is within tolerance

C.  

A dial indicator is oriented vertically and zeroed prior to base bolt tightening with a reading taken after tightening to confirm movement is within tolerance

D.  

Mounting bolt torque is verified with a calibrated torque wrench with no visible gaps observed between the foot and base interface

Discussion 0
Question # 28

Areas where ignitable concentrations of flammable gases or vapors are present continuously or for long periods of time are classified as:

Options:

A.  

Class I Zone 0.

B.  

Class I Zone 1.

C.  

Class I Division 2.

D.  

Class I Zone 2.

Discussion 0
Question # 29

According to API 541, exterior surfaces, with the exception of machined surfaces or corrosion resistant material, shall be coated with which of the following?

Options:

A.  

Heavy shipping grease

B.  

Oil soluble rust preservative

C.  

Vendor's standard paint

D.  

Inorganic zinc

Discussion 0
Question # 30

Apparent power is measured in:

Options:

A.  

mhos.

B.  

vars.

C.  

volt-amperes.

D.  

watts.

Discussion 0
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