Mechanical and Engineering PICAT

These tools are called… A) taps and dies. B) gears and calipers. C) sockets and spinners. D) tube cutting and double flaring tools.

A) taps and dies.

A hand vacuum pump can be used to test… A) a MAP sensor. B) a BAP sensor. C) an oxygen sensor. D) a fuel injection sensor.

A) a MAP sensor.

Which of the following systems includes a connecting rod? A) engine mechanical B) supplemental restraint C) suspension and steering D) heating and air conditioning

A) engine mechanical

What is the result if connecting rods are not properly aligned? A) badly adjusted rocker arms B) excessively worn wrist pin C) excessively worn camshaft D) weakened valve springs

B) excessively worn wrist pin

What is the source of heat for a typical automotive heating system? A) compressor B) electric motor C) engine coolant D) electric heat strips

C) engine coolant

Damaged or rusted threads on a machine screw are typically repaired using a? A) die. B) rasp. C) round file. D) sanding block.

A) die.

Which of the following saws is most likely to cause kickback? A) jigsaw B) band saw C) scroll saw D) circular saw

D) circular saw

As shown in the illustration, what do the numbers on the bolt heads indicate? A) pitch B) length C) strength D) diameter

C) strength

The term "MDF" refers to A) medium density fiberboard. B) metal design fabrication. C) metric density per foot. D) metal device feature.

A) medium density fiberboard.

Electronics Information In a closed circuit, when a short power cord is replaced with a long power cord, which of the following increases? A) voltage B) insulation C) resistance D) conductivity

C) resistance

The phrase "open circuit" means A) loose wires. B) disconnected. C) fully charged. D) current can flow free.

B) disconnected.

Which of the following can be measured using the ohmmeter function on a multimeter? A) current B) voltage C) resistance D) capacitance

C) resistance

Very small electric currents are measured in units called A) kilovolts. B) microwatts. C) milliamperes. D) electron volts.

C) milliamperes.

A switch starts or stops the flow of electric current in a circuit by means of its A) probes. B) contacts. C) resistors. D) insulators.

B) contacts.

Which of the following allows the telecommunications industry to transmit the greatest volume of data at the fastest speed? A) copper wire B) optical fiber C) wireless router D) aluminum wire

B) optical fiber

What is shown here? A) resistor B) transistor C) grounding wire D) coaxial connector

A) resistor

In construction, a flaring tool is associated with A) pipe. B) wire. C) solder. D) sandpaper.

A) pipe.

The product shown is used for A) speaker wiring. B) hand soldering. C) electromagnet coils. D) transformer winding.

B) hand soldering.

The colored stripes on a resistor indicate the resistor's A) age. B) value. C) serial number. D) model number.

B) value.

Mechanical Comprehension

In engineering terms, if a building does not deflect or move when a force is applied, it is said to be A) rigid. B) steady. C) constant. D) perpetual.

A) rigid.

What is the mechanical advantage of the inclined plane shown in the illustration? A) 2 B) 5 C) 10 D) 30

A) 2

When lifting a load with the pulley system shown in the illustration, the effort needed to lift the load is A) less than half the load. B) half of the load. C) the same as the load. D) twice as much as the load.

C) the same as the load.

As shown in this illustration, a downward force causes the beam to bend. The bottom of the beam is under A) tension. B) expansion. C) contraction. D) compression.

D) compression.

What is the name of the mechanism shown in the illustration? A) cam B) ratchet C) slider

crank D) compound gear

How much force is needed to balance this system? A) 8 kg B) 9 kg C) 10 kg D) 12 kg

A) 8 kg

In this diagram of a simple gearbox, the gear ratios for each pair of gears is given. What will be the output speed if the input speed is 240 rpm?

A) 10 rpm B) 20 rpm C) 60 rpm D) 120 rpm

A) 10 rpm

What is the mechanical advantage of the pliers shown in the illustration? A) 3 B) 4 C) 8 D) 12

A) 3

Compared to a bullet dropped from the same height, a bullet fired from a perfectly horizontal rifle… A) touches the ground later. B) does not touch the ground. C) touches the ground sooner. D) touches the ground at the same time.

D) touches the ground at the same time.

In the gear train shown in the illustration, if the driver gear (12 teeth) rotates at 120 revolutions per minute (rpm), at what rpm does the driven gear (36 teeth) rotate? A) 40 B) 60 C) 120 D) 360

A) 40