MECHANICAL ENGINEERING MCQ SECTION 39

421. Perpetual Motion Machine is the machine which violates the

law of thermodynamics.

422. A quasi-static process has main characteristics as it is

an infinitely slow process.

423. Perpetual Motion Machine is a

hypothetical concept.

424. Total amount of energy in the universe is

Constant.

425. heat energy and work energy are the

path functions.

426. Torsional pendulum is used to determine mass moment of inertia of

Flywheel.

427. Scotch yoke mechanism is the inversion of

Double slider kinematic chain.

428. Watt's mechanism is based on

inversions of four bar chain mechanism.

429. One quaternary joint is equal to

3 binary joints.

430. the type of absorption dynamometer is

Prony brake dynamometer.

431. Which parameters can be measured using a dynamometer?

Force, Torque & Power.

432. Which clutch is known as wet clutch?

multi plate clutch.

433. Force exerted by work piece on chip in normal direction of shear plane that is known as

Backing up force.

435. Merchant circle diagram is used to

analyze the forces acting in metal cutting.

436. The analysis of three forces system, which balance each other for cutting to occur. Each system is a

triangle of forces.

437. With the slope, n and intercept, c, Taylor derived the simple equation

as VTⁿ= C.

(where, n is called, Taylor's tool life exponent.)

438. The tool life increases with the increase in

side cutting edge angle.

439. Crater wear occurs mainly on the face of the cutting tool at a short distance from the

cutting edge only.

440. Flank wear depends upon the amount and distribution of

hard constituents in the work material.

441. Crater wear is predominant into the

tungsten carbide tools.

442. Crater wear is usually found while we machining the

brittle materials.

443. The relation between the tool life(T) in minutes and cutting speed (V) in m/min that is represented by equation of

VTⁿ= C

444. Rectangular type of robot is most suitable for

pick and place operations.

445. A robot’s arm is also known as its

Manipulator

446. Robots is mostly associated with

automation.

447. Logic is the basic element for

an automated machine tools.

448. A spherical configuration for a

Robot.

449. In Ultrasonic Machining (USM) process the material is removed due to the action of

abrasive grains.

450.Electro-Chemical Machining (ECM) process has

highest rate of metal removal.