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AFCAT (Air Force Common Admission Test) Engineering Knowledge Test (EKT) - Common Engineering Core Flashcards
59 question-and-answer cards covering Engineering Knowledge Test (EKT) - Common Engineering Core as it is examined in AFCAT (Air Force Common Admission Test). 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Engineering Knowledge Test (EKT) - Common Engineering Core deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
State Einstein's photoelectric equation.
hf = W₀ + KE_max, i.e., hf = φ + ½mv²_max, where φ is the work function.
What is the de Broglie wavelength of a particle?
λ = h/p = h/(mv), where h is Planck's constant and p is momentum.
State Heisenberg's uncertainty principle.
Δx·Δp ≥ h/4π; position and momentum cannot both be measured with arbitrary precision simultaneously.
What is the mass-energy equivalence relation?
E = mc², where c is the speed of light in vacuum.
In orthographic projection, what are the three principal views typically shown?
Front view (elevation), top view (plan), and side view (end view/profile).
What is the difference between first-angle and third-angle projection?
First-angle: object between observer and plane; top view below front view (used in India/Europe). Third-angle: plane between observer and object; top view above front view (used in USA).
What is an isometric projection and its standard axis angles?
A pictorial 3D representation where the three axes are equally inclined at 120° to each other (drawn at 30° to the horizontal).
What is the isometric scale factor compared to true length?
Isometric lengths are about 0.816 (√(2/3)) times the true length; isometric drawing often uses true lengths for simplicity.
What is a sectional view and why is hatching used?
A view showing the interior of an object as if cut by a cutting plane; hatching (section lines) indicates the solid material that the plane cuts through.
What is the standard hatching angle and convention for adjacent parts in a section?
Hatching lines are drawn at 45° to the principal axis; adjacent parts are hatched in opposite directions or different angles/spacing to distinguish them.
What is the difference between a full section and a half section?
Full section: cutting plane passes entirely through the object. Half section: removes one quarter, showing half in section and half in external view (for symmetric objects).
Name the main systems of placing dimensions on a drawing.
Aligned system (dimensions read parallel to the dimension line) and Unidirectional system (all dimensions read horizontally from the bottom).
What type of line is used for a centre line and for a hidden edge in engineering drawing?
Centre line: thin long-short dash (chain) line; Hidden edge: thin/medium dashed (short dash) line.
Which Indian standard governs engineering drawing conventions?
IS:696 / SP:46 (Bureau of Indian Standards code of practice for general engineering drawing).
What is the difference between statics and dynamics in engineering mechanics?
Statics deals with bodies at rest or in equilibrium under forces; Dynamics deals with bodies in motion, including kinematics (motion) and kinetics (forces causing motion).
State the conditions of equilibrium for a coplanar force system.
ΣFx = 0, ΣFy = 0, and ΣM = 0 (sum of horizontal forces, vertical forces, and moments all equal zero).
State the first law of thermodynamics.
Energy cannot be created or destroyed: Q = ΔU + W (heat added equals change in internal energy plus work done by the system).
State the second law of thermodynamics (Kelvin-Planck statement).
It is impossible to construct a device operating in a cycle that converts all absorbed heat completely into work (no 100% efficient heat engine).
What is the efficiency of a Carnot engine operating between temperatures T_H and T_C?
η = 1 - (T_C / T_H), with temperatures in kelvin; it is the maximum possible efficiency.
What is the difference between ductility, malleability, and brittleness?
Ductility: ability to be drawn into wires (tension). Malleability: ability to be hammered into sheets (compression). Brittleness: tendency to fracture without significant plastic deformation.
What are the main types of crystal structures in metals?
Body-Centred Cubic (BCC), Face-Centred Cubic (FCC), and Hexagonal Close-Packed (HCP).
What is the difference between ferrous and non-ferrous metals, with examples?
Ferrous metals contain iron as the main constituent (e.g., steel, cast iron); non-ferrous metals do not (e.g., aluminium, copper, brass).
What distinguishes elastic deformation from plastic deformation?
Elastic deformation is recoverable when load is removed (within elastic limit); plastic deformation is permanent (beyond the yield point).
What is the chain rule for differentiating a composite function y = f(g(x))?
dy/dx = f'(g(x)) · g'(x), i.e., (dy/du)·(du/dx).
What this deck covers
The Engineering Knowledge Test (EKT) - Common Engineering Core deck follows the AFCAT (Air Force Common Admission Test) Engineering Knowledge Test (EKT) - Common Engineering Core syllabus — 4 chapters and 13 topics — so questions land on material that is genuinely examinable rather than trivia around it. That works out to roughly 14.8 cards per chapter.
Answers are written to be recallable, not just readable — averaging about 118 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Engineering Knowledge Test (EKT) - Common Engineering Core flashcards FAQ
How many Engineering Knowledge Test (EKT) - Common Engineering Core flashcards are in this AFCAT (Air Force Common Admission Test) deck?
59 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these AFCAT (Air Force Common Admission Test) flashcards free?
Yes. The preview here is free to read with no signup, and the full 59-card deck is free inside the Examius app.
What do the Engineering Knowledge Test (EKT) - Common Engineering Core cards cover?
They follow the AFCAT (Air Force Common Admission Test) Engineering Knowledge Test (EKT) - Common Engineering Core syllabus — 4 chapters and 13 topics — so the questions track what is actually examinable.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.