Related Questions

Faster rate of drying of moulded refractories results in high __________ of refractories.
A Green strength
B Voids
C Shrinkage
D Both B and C
কোনো প্রকার কুঋণ সমন্বয় করার পূর্বে দেনাদারের পরিমাণ হচ্ছে ২০,৫০০ টাকা। কুঋণ ৫০০ টাকা, কুঋণ সঞ্চিতি ৫৫০ টাকা। দেনাদারের উপর ১০% কুঋণ সঞ্চিতি এবং ৫% বাট্টা সঞ্চিতি ধার্য করা হয়। বাট্টা সঞ্চিতির পরিমাণ কত? (The debtors balance appears at Tk. 20,500 prior to bad debt adjustment. Bad debt expense in Tk.500 and bad debt reserve is Tk. 550. A provision is created for bad debt is 10% and is made for a discount of 5%. What will be reserve for discount in taka?)
A Tk. 2000
B Tk. 2100
C Tk. 950
D Tk. 900
Refractories used in/for __________ should have low thermal conductivity.
A Coke ovens
B Insulation
C Regenerators
D Muffle furnaces
How many flowers are there if all of them are roses except two, all of them are tulips except two and all of them are daisies except two?
A 3
B 6
C 9
D 10
How many flowers are there if all of them are roses except two , all of them are tulips except two and all of them are daisies except two?
A 3
B 6
C 9
D 10
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
Magnesite refractories have low resistance to
A Attack by basic slag
B Abrasion
C Disintegration on sudden change of temperature
D Both B and C
silicon carbide refractories have very low
A [

A. Refractoriness (

B. Thermal conductivity

B Resistance to thermal shock
C None of these
In AC.S.R. Conductors, the insulation between aluminium and steel conductors is
A Insulin
B Bitumen
C Varnish
D No insulation is required
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
A 10-3
B 103
C 10-15
D 1015

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