General written exam

How would you convert Farads to picofarads?

Multiply Farads by 10 to the power of 12

When referring to an electrical circuit diagram, what point is considered to be at 0 voltage?

The ground reference

The working voltage of a capacitor in an alternating current circuit should be

At least 50% greater than the highest

What is the opposition to the flow of alternating current produced by magnetic field with generated back voltage called?

Inductive reactance

Which condition is an indication of improperly torqued Cell link connections of a nickel cadium battery?

Heat or burn marks on the hardware.

What will happen if water is added to a nickel cadium battery When it is not fully charged?

Excessive spewing is likely to occur during the charging cycle.

The correct way to connect a test voltmeter in a circuit is

In parallel with the unit

What is the advantage of a current limiter

It will take overload for a short period

Which is correct concerning a parallel circuit

Total resistance will be smaller than the smallest resistor

Which of the following best describes a contributing factors to thermal runaway in a nickel cadium battery installed in an aircraft?

Low internal resistance intensified by high cell temperature and a high current discharge and charge rate in a constant voltage charging system

The basis for transformer operation in the use of alternating current is mutual

Inductance

When referencing voltage in parallel DC circuits, what statement is true?

The voltage is equal in all portions of the circuit

How does field strength in a coil inductor increase?

By increasing the # of turns per unit length

A circuit protection devices called a current limiter is a slow blow fuse & used in

Heavy power circuits

Which logic gate provides an active high output only when all inputs are different?

XOR / Exclusive OR gate

Nickel cadmium batteries are stored for a very long time, a low liquid level will show because?

Electrolytes become absorbed into the plates

Total inductor formula in a series circuit

Add up all the inductance of the inductor within the circuit

Which effect doesnt apply to movement of electrons flowing in a conductor?

Static energy

If you double the # of coils in an inductor, field strength will

Also double

How can the state of charge on a ni-cad battery be found?

By a measured discharge

What determines the amount of current which will flow through a battery while its being charged by a constant volt source?

The state of charge of the battery

Capacitors are used in DC circuits sometimes to…

Smooth out slight pulsating in current / voltage

Many areas of aviation have shifted their focus from eliminating errors to

Preventing and managing error

James reasons said mechanics error fall into 1 of 3 categories

Slips, mistakes and violations

Who developed the magnificent 7?

Gordon DuPont

Formula for sphere volume:

V= 1/6 x pi x diameter³

Formula for solving volume in a rectangular object is

Length x width x depth

Formula for area of a trapezoid is

Area = ½ ( base 1 + base 2) x height

How do you convert picofarad to microfarad

Move decimal 6 positions left

Formula for cylinder volume is

Pi x radius² x cylinder height

Max penalty for cheating / other misconduct when taking FAA test is

Youre ineligible to receive any certificate or rating for 1 year & suspension of any certificate held

The substitute of fabric on fabric covered parts such as wings, fuselage, stabilizers or control surfaces is said to be

A major repair even though no other alteration / repairs are performed

A certified / property rated mechanic may perform

An airframe major repair & alteration but cannot approve return to service

Under the FAA regulation, an amt is required to perform maintenance on aircraft so it…

Is atleast equal to its original or properly altered condition

14 cfr part 65 contains certificate info for

Airmen other than flight crew

A airworthiness directive (AD) requires that a propeller be altered. A mechanic could..

Perform & approve the work for return to service if its a minor alteration

A certified mechanic shall not exercise the certificate and rating. Unless in the last 24 months, the Admin has found that the holder has

Served as a mechanic under the certification and rating for at least 6 months.

Instrument repairs may be performed only by

In FAA approved instrument repair station

An airframe or power plant mechanic cannot

Delegate, a one hundred hour inspection to a non certified mechanic

In FAA mechanic can

Approve for return to service, a minor alteration that they have performed to the rating that they hold

A certified mechanic with at least an airframe rating may perform

Inspection and function checks on aircraft instruments

Certified mechanics under their general certification may perform

One hundred hour inspection of instruments

What device is used to get the best accuracy of aircraft leveling

spirit level

If an aircraft CG is 24% of MAC , that 24% is an expression of

The distance from the LEMAC

To get good weight datas for solving the cg weigh the aircraft

In a flight level altitude

Under cfr part 23, the oil and the supply tank is considered

Part of the empty weight

The major source of weight change for most aircrafts at they age is caused by

Repairs and alterations

In weight and balance, an aircraft is considered in balance When?

The average moment arm of the loaded airplane is within its C. G range.

What could cause imprecise scale readings

The parking brake being set

Useful load of an aircraft includes

Crew ,usable fuel, passengers and cargo

What measurement type is used to show the arm in weight and balance calculation

Distance

All other things being equal. If an item's removed of the useful load located aft on aircraft CG the aircraft CG will be

Forward in proportion to the weight of the item in its location in the aircraft