# Prime Power Test Technician Level 2 Practice Exam 2 Of 3 (Technical)

50 Questions

Test Technician Level 2 practice exam. 50 questions selected at random. 90 minute time limit. Please allow yourself at least 1 hour to complete the test properly. 70% is passing. You cannot save test and resume later. Good Luck!

• 1.
The sum of the interior angles of a triangle is :
• A.

360

• B.

120

• C.

180

• D.

90

• 2.
If  X=5 , Y=6, then : XY(X^2 -Y) =                      X times Y times   (X squared minus Y)
• A.

370

• B.

570

• C.

840

• D.

930

• 3.
If a specified value is 120.00 , and the measured value is 124.56, the % error is:
• A.

6.39%

• B.

4.56%

• C.

45.6%

• D.

3.8%

• 4.
One giga unit is equal to:
• A.

1,000

• B.

.001

• C.

100,000

• D.

1,000,000

• E.

1,000,000,000

• 5.
Which formula is correct if : A=100, B= 200, and C= 300
• A.

C=A-B

• B.

C=C+A

• C.

A=B+C

• D.

B=C-A

• 6.
Kilo equals :
• A.

Mega / 1000

• B.

Giga / 100

• C.

Deca x 10

• D.

Mili x 1000

• 7.
If 4000 was the specified value, and 3850 was the mesured value, what is the percent error?
• A.

-.096

• B.

-3.75

• C.

3.90

• D.

1.04

• 8.
Insulation resistance tests sets usually include ___ test connection terminals.
• A.

1

• B.

2

• C.

3

• D.

4

• 9.
With insulation resistance test equipment :
• A.

Leakage current returned by the guard lead are not normally metered

• B.

Leakage current returned by the guard lead passes through the meter

• C.

The guard lead provides stabilizing voltage

• D.

The guard lead must be connected to ground

• 10.
Properly adjusting to the null point of a transformer turns ratio test set :
• A.

Measures the difference between the test set's internal fixed ratio reference transformer and the specimen transformer

• B.

Assures correct test current flow and test voltage

• C.

Is accomplished by changing the adjustable ratio of the test set's reference transformer

• D.

Is accomplished by changing the test set's adjustment dial unil the test set impedence matches the specimen transformer's impedance

• E.

None of the above

• 11.
Typical ground resistance test sets provide :
• A.

3 output current terminals

• B.

3 output voltage terminals

• C.

4 output voltage terminals

• D.

4 output terminals

• E.

None of the above

• 12.
An insulation resistance test set has 3 scales on its meter face. The top scale is 3 to 3k gigohms. The center scale is 30 to 30k megohms. The bottom scale is 3 to 30k kilohms. After selecting the center scale and connecting the leads to a 2300 volt , 500 HP motor, the instrument indicates the lowest reading. You have determined that :
• A.

There are shorted turns in the windings

• B.

The motor insulation is weak

• C.

The value measured should be reported

• D.

The test set is on the wrong scale

• E.

B and D are correct

• 13.
What is indicated when the turns ratio test set is hard to crank and the correct exciting voltage cannot be reached ?
• A.

Incorrect polarity

• B.

Shorted specimen windings

• C.

Open windings

• D.

KVa rating is too large

• E.

A or B

• 14.
Low resistance ohmmeters typically include ____ test connection terminals
• A.

2

• B.

3

• C.

4

• D.

5

• E.

6

• 15.
Winding resistance measurements are performed by using a :
• A.

Megohmeter

• B.

Multimeter

• C.

Low resistance ohmmeter

• D.

Insulation resistance test set

• 16.
Measuring instruments with graduated scales and pointers are referred to as __________ type instruments
• A.

Analog

• B.

Digital

• C.

LED

• D.

Averaging

• E.

Recording

• 17.
Generally, high current test sets:
• A.

Provide controllable high currents at 277/480 volts

• B.

Are 3 phase devices

• C.

Are operated ungrounded

• D.

Provide high test voltages

• E.

Provide high test currents at 10 volts or less

• 18.
Which instrument or test set is LEAST likely to be used during the testing of medium voltage cables
• A.

Megohmmeter

• B.

Ohmmeter

• C.

DC high potential test set

• D.

Voltage detector

• E.

Turns ratio test set

• 19.
A polorization index  test typically requires the use of :
• A.

Voltmeter

• B.

Megohhmeter

• C.

Low resistance ohmmeter

• D.

Power factor test set

• E.

Watt or phase angle meter

• 20.
Insulation power factor test equipment
• A.

Is 3 phase

• B.

Can perform load power factor measurement

• C.

Is frequently used to test transformers

• D.

Measures transformer or feeder power usage

• E.

Verifies power ratings

• 21.
What test equipment is used to test the RTD inputs of a motor protective relay?
• A.

• B.

High current test set

• C.

Relay test set

• D.

Multi-meter

• E.

Megohmmeter

• 22.
Multi-meters can be routinely used to
• A.

Measure resistance between switchgear and building neutrals and ground conductors during maintenance testing of ground faults

• B.

To prove the integrity of bolted bus and cable connections

• C.

To measure phase angle

• D.

All of the above

• E.

None of the above

• 23.
How would you use a VOM rated at 10 amperes maximum to measure a 100 amp load?
• A.

Use the 10A scale

• B.

Use the ohm scale

• C.

Use the volt scale

• D.

Use the mA scale

• E.

Use a current transformer

• 24.
To measure circuit resistance, first
• A.

Zero the ohm scale

• B.

Check for the presence of voltage

• C.

• D.

Check frequency

• 25.
The maximum voltage rating of a multi-meter used without a high voltage probe is typically
• A.

2500 volts RMS, continuous

• B.

2500 volts RMS or dc, continuous

• C.

750-1000 volts RMS, non-continuous

• D.

600 volts peak

• E.

500 volts ac or dc, continuous

• 26.
To make a resistance measurement, start with the ohmmeter set on :
• A.

The lowest resistance scale

• B.

The mid range scale

• C.

The highest resistance scale

• D.

Any scale

• 27.
The batteries in a typical analog multimeter are required for:
• A.

Dc voltage measurements

• B.

Ac voltage measurements

• C.

Ampere measurements

• D.

Resistance measurements

• E.

All meter measurements

• 28.
Voltage in an electrical system:
• A.

Is a measurement of power flow

• B.

Is always measured to ground

• C.

Is equivelent to the pressure of a water system

• D.

Varies with ampere flow

• E.

Is a result of resistance

• 29.
On a 575 Delta system, what is the line to line voltage?
• A.

332

• B.

600

• C.

480

• D.

994

• E.

575

• 30.
Watt is a unit of:
• A.

True power

• B.

Apparent power

• C.

Reactive power

• D.

Real power

• E.

A and D

• 31.
Capacitance is measured in:
• A.

Watts

• B.

Coulombs

• C.

• D.

Henrys

• E.

Voltamps

• 32.
There are _____ degrees in one cycle of a sine wave.
• A.

180

• B.

360

• C.

720

• D.

90

• E.

60

• 33.
Reactive power is measured in:
• A.

Watts

• B.

Vars

• C.

Voltamps

• D.

Ohms

• E.

Joules

• 34.
An ampere is
• A.

Electromotive force

• B.

Torque

• C.

Resistance to flow

• D.

One coulomb per second

• E.

Electrostatic charge

• 35.
The henry is a unit of measurement of
• A.

Reactance

• B.

Resistance

• C.

Energy

• D.

Capacitance

• E.

Inductance

• 36.
Power factor is calculated by:
• A.

V/A

• B.

KW/kVA

• C.

HP/V

• D.

I/R

• E.

VA

• 37.
If an AC voltage has a frequency of 350 hertz, how many times will the positive peak value of voltage occur after 2 seconds?
• A.

350

• B.

700

• C.

1400

• D.

2800

• E.

175

• 38.
What side of the power triangle is the longest?
• A.

Watts

• B.

Apparent

• C.

Vars

• D.

Reactive

• E.

True

• 39.
A two winding transformer that has a lower primary voltage than its secondary is known as:
• A.

A low voltage transformer

• B.

A high voltage transformer

• C.

A step up transformer

• D.

A step down transformer

• E.

An autotransformer

• 40.
The RMS value of a sinusoidal wave is equal to the peak value times:
• A.

2.0

• B.

1.732

• C.

.80

• D.

.707

• E.

1.414

• 41.
If the current lags the voltage by 90 degrees, it is purely a _____________ circuit.
• A.

Resistive

• B.

Inductive

• C.

Capacitive

• D.

Parallel

• E.

Series

• 42.
A 119 volt, 60hz AC voltage is put across a series circuit with an 8 ohm resistor and a capacitor who's reactance is 15 ohms. What is the circuit impedance? Z = Square root of (R^2 + Xc^2)
• A.

23 ohms

• B.

17 ohms

• C.

15 ohms

• D.

12.5 ohms

• E.

7 ohms

• 43.
A 0.8 henry inductor is connected to a 120 volt, 60hz line. How much current will flow?  hint:  Z= (2xpi)(Frequency)(Henrys)  and I= E/Z
• A.

.398 amps

• B.

.800 amps

• C.

1.25 amps

• D.

150 amps

• 44.
A 35 microfarad capacitor is connected to a 120 volt, 60 hz line. What is the value of Xc?
• A.

3.428

• B.

21.54

• C.

75.79

• D.

205.68

• E.

1292.4

• 45.
In a series ac circuit that  contains only capacative reactance and resistance, the current :
• A.

Leads the voltage by 90 degrees

• B.

Lags the voltage by 90 degrees

• C.

Is in phase with the voltage

• D.

Leads the voltage by less than 90 degrees

• E.

Lags the voltage by less than 90 degrees

• 46.
What is the kVA rating of a 3 phase generator rated at 100kW with a .9 power factor?
• A.

111 kVA

• B.

90 kVA

• C.

100 kVA

• D.

190 kVA

• 47.
What is the total circuit resistance?
• A.

100 ohms

• B.

50 ohms

• C.

10 ohms

• D.

1 ohm

• 48.
What is the total power consumed in the circuit?
• A.

4320 watts

• B.

1260 watts

• C.

4200 watts

• D.

120 watts

• E.

720 watts

• 49.
What current will flow in this circuit?
• A.

6 amps

• B.

3 amps

• C.

14 amps

• D.

8 amps

• E.

12 amps

• 50.
What is the turns ratio of a 3 phase 500kVA, 13,200-480 volt rated D-D transformer that is 80% loaded?
• A.

38.122

• B.

27.5

• C.

22.0

• D.

47.653

• E.

None of the above

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