Exam (elaborations)
STATIONARY ENGINEER ELECTRIC QUESTIONS WITH 100% CORRECT ANSWER
- Course
- Institution
STATIONARY ENGINEER ELECTRIC QUESTIONS WITH 100% CORRECT ANSWER STATIONARY ENGINEER ELECTRIC QUESTIONS WITH 100% CORRECT ANSWER
[Show more]
Content preview
STATIONARY ENGINEER ELECTRIC 2024-2025QUESTIONS WITH 100% CORRECT ANSWER
An AC circuit consists only of a pure inductance and a power source. The
relationship between the voltage and the current in this circuit is that the -
CORRECT ANSWER current lags the voltage
The power factor of a load is equal to the ____________ power divided by the
____________ power. - CORRECT ANSWER True ; apparent
A 10-ohms and 20-ohms resistor are connected in parallel. The total line current
drawn by this parallel combination is 30 amps. Under these conditions, the line
voltage will be ____________ volts. - CORRECT ANSWER 200
A 20-ohm resistor is connected in series with a parallel combination of two
resistors, one of which is 10-ohms, the other 40-ohms. If the voltage across the
parallel combination is 40 volts, the voltage across the 20-ohm series resistor is
________ volts. - CORRECT ANSWER 100
A certain 120-volts single-phase AC circuit has a power factor of 80 percent and a
watt-meter reading of 1150 watts. The current drawn by the circuit is _________
amperes. - CORRECT ANSWER 12
If the voltage between lines of a 3-phase, 3-wire delta connected system is 2400
volts, then the phase voltage is _____________ volts - CORRECT ANSWER
2400
,STATIONARY ENGINEER ELECTRIC 2024-2025
QUESTIONS WITH 100% CORRECT ANSWER
A circuit consists of an inductive reactance of 15 ohms and a resistor of 20 ohms
in series across a 100-volts, 60 cycles AC supply. The current in this circuit is
____________ amperes. - CORRECT ANSWER 4
A 3 phase, 3 wire, 208 volt, 60 cycles AC service supplies a balanced load
consisting of three 30 ohms resistors connected wye. The line current under these
conditions os MOST NEARLY ___________ amperes. - CORRECT ANSWER
6.9
If the level of the electrolyte in a lead acid storage battery falls below the top of
the plates because of evaporations under normal operating conditions, it is BEST
to add - CORRECT ANSWER Water
A 600 volt cartridge fuse must have knife blade contacts if its current rating
exceeds _____________ amperes. - CORRECT ANSWER 60
When the magnitude of the short circuit currents in a feeder circuit must be
limited, this is USUALLY accomplished by means of - CORRECT ANSWER
reactors
The cross sectional area in circular mils of a standard cable having 37 strands,
each of which ha a diameter of 90 nils, is MOST NEARLY - CORRECT ANSWER
300,000
,STATIONARY ENGINEER ELECTRIC 2024-2025
QUESTIONS WITH 100% CORRECT ANSWER
A coil having an average diameter of 4 inches is to be made up from a 1,260 ft
long length of wire. The numbers of turns in this coil will be MOST NEARLY -
CORRECT ANSWER 1,200
The device commonly known as a growler is FREQUENTLY used to - CORRECT
ANSWER test DC armature windings for shorts
When a megger is applied alternately to the two leads of a direct current
electrolytic capacitor, the reading will - CORRECT ANSWER start at zero but
increase gradually for one of the connections
The device used to convert direct current to alternating current is called -
CORRECT ANSWER inverters
Of the following conditions, the one which is MOST likely to cause flashing or
excessive arcing from brush to brush in a motor is - CORRECT ANSWER
Excessively high voltage on the line
The currents in the armature equalizer connections in a DC generator are -
CORRECT ANSWER alternating currents
, STATIONARY ENGINEER ELECTRIC 2024-2025
QUESTIONS WITH 100% CORRECT ANSWER
A generating station has one 1000 Kw and two 2000 Kw generators. To supply
2000 Kw MOST economically, the operating conditions should be - CORRECT
ANSWER one 2000 Kw generator at full load
The terminal voltage of a DC shunt generator having an armature current of 100
amperes, an armature resistance of 0.02 ohms, and a generated E.M.F of 222
volts is MOST NEARLY ______________ volts. - CORRECT ANSWER 220
The number of poles in the field of an alternator generating voltage at a
frequency of 60 cycles per second while rotating at 1200 rpm is - CORRECT
ANSWER 6
If the field of a shunt motor opens while running, the motor will - CORRECT
ANSWER run away
To reverse the direction of rotation of a cumulative compound motor, and not
have it run as a differential compound motor, reverse the connections to the
____________ field. - CORRECT ANSWER shunt field and to the series
A main contributing factor to motor stator failure usually is - CORRECT ANSWER
dirt
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller NURSINGTRAINER. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76658 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now